Last week, we identified the hottest hitting prospects in each organization. This week, we shift our focus to the top-performing pitchers during August from each farm system.More from MLB Pipeline:• Top 100 prospects | Stats | Video | Podcast | Complete coverageDiamondbacks right-hander David Hagaman struck out 48 in 31 1/3 innings, more whiffs than any Minor League pitcher has recorded in a calendar month this season. He's joined on our list below by five Top 100 Prospects: Mariners righty Ryan Sloan (No. 8), Braves left-hander Cam Caminiti (No. 43), Cardinals southpaw Liam Doyle (No. 44), Angels righty Tyler Bremner (No. 46) and Athletics left-hander Jamie Arnold (No. 57).Jump to: AL East | AL Central | AL West | NL East | NL Central | NL WestAMERICAN LEAGUE EASTBlue Jays: Danny Thompson Jr., RHP (No. 15)Signed for $5,000 out of UNC Greensboro as an eighth-rounder last year, the 24-year-old right-hander posted a 2.95 ERA with 25 strikeouts over four outings (21 1/3 innings) with Double-A New Hampshire in August and strung together three straight quality starts from Aug. 1-14. His 93-96 mph fastball has gotten whiffs in the Eastern League (with aid from his lower release height), and he shows both a harder and sweepier breaking ball to keep hitters off-balance. His upper-80s changeup has been a more effective pitch since his move from High-A in June.Orioles: Boston Bateman, LHP (No. 11)The Orioles suddenly find themselves flush with left-handers, including Bateman, who was part of the package received from the Padres in exchange for Ryan O'Hearn and Ramon Laureano at the 2025 Trade Deadline. He gets a lot of horizontal action on all of his pitches, highlighted by a mid-90s fastball and tight upper-80s slider. He didn't allow a run in 15 August innings in High-A while fanning 25 and limiting opponents to a .173 average.Rays: Ty Johnson, RHP (No. 10)Tampa Bay moved Johnson to the Triple-A Durham bullpen in late July with an eye toward using him as a Major League relief option, and he’s certainly doing all he can to push for that debut in The Show. The 6-foot-6 righty struck out 19 of his 36 batters faced in August (52.8 percent) and allowed only one earned run on two hits and two walks over 11 ⅓ innings in that time. His 92-95 mph four-seamer and 85-87 mph slider both had whiff rates above 53 percent last month, so it’s clear his two-pitch approach can not only work but dominate in the shorter appearances.Red Sox: Dylan Brown, LHP (No. 19)A 2025 eighth-rounder from Old Dominion, Brown ranks second in the Minors in strikeout rate (32 percent) during his pro debut thanks mainly to his command and deception with his four-seam fastball, which has added 2 mph this year but still averages 92 mph and tops out at 95. He permitted one earned run or less in four of his five starts last month in High-A, compiling a 2.66 ERA, .186 opponent average and a 31/4 K/BB ratio in 23 2/3 innings.Yankees: Brendan Beck, RHP (No. 28)Beck quietly is enjoying one of the best pitching seasons in the Minors, ranking fourth in WHIP (1.05), fifth in ERA (2.75) and eighth in opponent average (.205). The 2021 second-rounder from Stanford can break out six different pitches but works primarily with a low-90s fastball with good carry and a tight low-80s slider. He made three Triple-A starts in August, posting a 1.62 ERA with 27 strikeouts in 16 2/3 innings before working a scoreless frame in relief for the Yankees.AMERICAN LEAGUE CENTRALGuardians: Caden Favors, LHP (No. 29)The Guardians selected Favors in the sixth round out of Wichita State in 2024 because of his capacity to spin the ball, which translates into good carry on his low-90s fastball and plenty of action on his upper-70s curveball and upper-80s cutter. He gradually has acclimated to Double-A this season and logged a 2.54 ERA, .198 opponent average and 34/5 K/BB ratio in 28 1/3 innings last month.Royals: Hunter Owen, LHP (unranked on Royals Top 30)A fourth-round pick out of Vanderbilt in 2023, Owen is a former member of Kansas City’s Top 30 prospects ranking, and he’s pushing himself back into prominence with a late charge at Double-A Northwest Arkansas. His 45 strikeouts over 27 innings were second-most in the Minors in August, and he racked up those K’s while posting a 1.33 ERA, .181 average-against and 1.19 WHIP over five starts. The 6-foot-5 southpaw hasn’t been big on velocity with a fastball only around 91-93 mph but managed to get whiffs across his four-pitch mix.Get the latest from the Toronto Blue JaysHave the latest news, ticket information, and more from the Blue Jays and MLB delivered right to your inbox.Tigers: Ben Jacobs, LHP (No. 7)After a promotion in late April, Jacobs had a 6.25 ERA through his first 10 starts with High-A West Michigan, though he had struck out 55 over 36 innings in that span. His numbers have been more dominant across the board recently with a 0.44 ERA, 25 strikeouts and .119 average-against over four August starts (20 2/3 innings) with the Whitecaps. The 22-year-old left-hander – who has three potentially above-average pitches in his fastball, slider and changeup – has a Midwest League ERA now at 4.08, and his 34.4 percent strikeout rate on the season ranks sixth among Minor Leaguers with at least 80 frames in 2026.Twins: Adrian Bohorquez, RHP (No. 18)A forearm strain in mid-April put Bohorquez's season on hold for two months, but he rebounded to permit just one earned run in four starts between High-A and Double-A in August, while recording a .134 opponent average and 24/7 K/BB ratio in 20 innings. Signed for just $10,000 out of Venezuela in 2023, he relies heavily on a lively mid-90s four-seam fastball and a tight upper-80s slider.White Sox: David Sandlin, RHP (No. 11)The White Sox need pitching help if they're going to stay atop the AL Central, and they could give Sandlin another look after he fashioned a 2.00 ERA with 19 strikeouts in 18 Triple-A innings last month. Part of the Jordan Hicks trade with the Red Sox in February, he has gone 2-1 with a 6.93 ERA during three short stints in Chicago this year. He succeeds when he can command his mid-90s fastball, and he complements it with an upper-80s cutter and a mid-80s sweeper.AMERICAN LEAGUE WESTAngels: Tyler Bremner, RHP (No. 2/MLB No. 46)The second overall pick in the 2025 Draft out of UC Santa Barbara, Bremner was slowed by illness early in his pro debut but returned to form in August with a 3.60 ERA, .196 opponent average and a 34/8 K/BB ratio in 25 innings between High-A and Double-A. His high-spin mid-80s changeup grades among the best in the Minors and he sets it up with a mid-90s fastball with plenty of carry and horizontal action.Astros: Jagger Beck, RHP (No. 27)A rare nondrafted free agent signed out of high school, Beck turned pro for $150,000 in 2024 and missed most of last year with shoulder issues before emerging as one of the Astros' top young pitching prospects this summer. He owns two of the best breaking balls in the system, pairing an 82-85 mph slider with horizontal and vertical action with an 80-82 mph curveball, while his fastball sits in the low 90s. His 3.15 ERA in August actually was his highest since April, and he limited opponents to a .194 average while fanning 25 in 20 innings in Single-A.Athletics: Jamie Arnold, LHP (No. 3/MLB No. 57)Coming off the best month of his pro debut (1.57 ERA, .200 opponent average, 29/6 K/BB ratio in 23 Double-A innings), Arnold started September with five scoreless frames in his first Triple-A start. The 11th overall pick in the 2025 Draft out of Florida State, he has a wipeout mid-80s slider that plays well off a 92-94 mph fastball that tops out at 97 with significant horizontal life in the opposite direction.Mariners: Ryan Sloan, RHP (No. 2/MLB No. 8)Sloan yielded one run or less in four of his five August starts in Double-A, compiling a 2.84 ERA with 34 strikeouts and just two walks in 25 1/3 innings. Few pitchers can match his combination of stuff and strikes, as evidenced by his career 7.1 K/BB ratio -- the best in the Minors among pitchers with at least 150 innings in the last two seasons. The 2024 second-rounder from an Illinois high school gets outs with four different pitches: a four-seam fastball that averages 97 mph and reaches 100, a mid-80s sweeper, a sinker with similar velo to his four-seamer and a low-90s changeup with very little spin.Rangers: Dalton Pence, LHP (No. 10)A star reliever in college at North Carolina, Pence has thrived as a starter since turning pro as a 2024 11th-rounder and currently ranks third in the Minors in ERA (2.59) and opponent average (.208). He moved to Triple-A in August and had no trouble adapting, posting a 2.19 ERA, .209 opponent average and 18 strikeouts in 24 2/3 innings. His low-90s fastball with carry and command plays as a solid offering, as do his sweeping slider and splitter/changeup, both of which sit in the low 80s.Subscribe to the MLB Pipeline NewsletterNATIONAL LEAGUE EASTBraves: Cam Caminiti, LHP (No. 2/MLB No. 43)Caminiti was still technically a teenager when he made his Double-A Columbus debut on Aug. 6 (for two more days anyways), but he’s taken very well to the Minors’ second-highest level. Since that first outing with the Clingstones, the 6-foot-2 lefty owns a 2.13 ERA with 28 strikeouts over his first five Double-A starts (25 1/3 innings). Caminiti’s most effective pitch has been his sweeping breaking ball that has generated both whiff and chase.Marlins: Jacob Kisting, RHP (No. 21)Dealt from the Twins to the Rays last November for Eric Orze and then to the Marlins in a package for Liam Hicks last month, Kisting leads the Minors in ERA (1.63) and stands second in opponent average (.184) and WHIP (0.90). Promoted to Double-A after the second trade, he responded with a 1.42 ERA and 24/6 K/BB ratio in 19 innings. How is the 2024 14th-rounder from Bradley doing this? He works from a low release height that adds deception, his low-90s fastball stands out with its horizontal action and his ability to command it, and he keeps batters off balance with two variations of a low-80s changeup.Mets: Jonah Tong, RHP (No. 5)Tong’s tinkering to find a more diverse pitch mix has led to, well, mixed results at Triple-A Syracuse this season, but he found a groove in August and heads into September with a 0.84 ERA over his last four starts. He struck out 23 batters over 21 1/3 innings in that time, and after allowing just one hit over seven frames against Lehigh Valley on Saturday, he’s held batters to a .151 average in that span too. After being so fastball-changeup dominant in ‘25, Tong threw his cutter, curveball or slider 36.2 percent of the time during this four-start run that could earn him a shot back in the Majors before 2026 is out.Nationals: Miguel Sime Jr., RHP (No. 10)Walks have been a constant theme of Sime’s first Minor League season, and that’s been no different of late with 12 free passes over his last four starts (14 1/3 innings). However, the 6-foot-4 righty is checking about every other box as a 19-year-old at High-A with a 1.26 ERA and .160 average-against in those four outings with Wilmington. He fanned 26 of his 62 batters faced (41.9 percent) in August and leads Nationals Minor Leaguers with 130 over 72 1/3 innings on the season as a whole. Sime’s high-octane fastball remains the headliner, but he can get empty swings with a slider, curveball and changeup too.Phillies: Mavis Graves, LHP (No. 27)The 2022 sixth-rounder is Rule 5-eligible this offseason, and it is perhaps with that in mind that the Phillies moved him to the bullpen when they promoted him to Double-A Reading in late July. It’s been an effective move so far with the 6-foot-6 southpaw not allowing an earned run in any of his nine relief appearances in August. He fanned 18 batters and walked seven over 11 2/3 innings in that time. Graves has thrown his 79-81 mph slider 52 percent of the time, per Synergy, since his transition to the bullpen, and it’s easy to see why with a 56 percent whiff rate.NATIONAL LEAGUE CENTRALBrewers: Josh Knoth, RHP (No. 9)Knoth hasn’t just returned from Tommy John surgery in an admirable fashion; he’s also picking up steam as 2026 progresses. The 21-year-old righty, who missed all of the 2025 season, had a 2.60 ERA with 26 strikeouts in his final five starts (27 2/3 innings) with High-A Wisconsin and earned his first promotion to Double-A Biloxi this week. (He allowed four earned runs in five frames during his debut Tuesday night.) Knoth throws everything with a ton of spin, including a riding four-seamer, and he’s established himself as one of Milwaukee’s most promising arms now that he’s healthy.Cardinals: Liam Doyle, LHP (No. 2/MLB No. 44)St. Louis has always preached that it would be a process with the 2025 fifth overall pick, and we’re seeing many of the fruits of that process now at Double-A Springfield. Doyle owned a 1.31 ERA with 29 strikeouts and nine walks in 20 2/3 innings across four starts in August. His Aug. 13 outing against Northwest Arkansas marked the first time he completed six innings in an outing as a pro. Doyle’s 95-97 mph fastball remains the star of the show, and his upper-80s splitter is still his best secondary as he works on establishing breaking options.Cubs: Jostin Florentino, RHP (No. 22)Florentino's delivery metrics (exceptionally low release height, good extension) are much more notable than his pure stuff (highlighted by a 90-mph fastball and 75-mph slider). Yet he continues to get outs and is coming off his best month of the season, logging a 2.95 ERA with a 22/5 K/BB ratio in 18 1/3 innings in High-A. He doesn't have a high ceiling but already has exceeded expectations since signing for $10,000 out of the Dominican Republic in 2023.Pirates: Thomas Harrington, RHP (unranked on Pirates Top 30)Harrington made his MLB debut last year with three appearances but has been back with Triple-A Indianapolis for all of 2026, bouncing between starting and bullpen roles. He’s moved back into bulk outings in August and the actual rotation on Aug. 13 with solid results: a 3.15 ERA, 1.25 WHIP and 17 strikeouts in his last four starts (20 innings). The 25-year-old righty uses a six-pitch mix (four-seamer, sinker, cutter, splitter, curveball, sweeper) to keep hitters guessing, and in this recent run, he has not thrown any individual pitch more than 25 percent of the time.Reds: Mason Morris, RHP (No. 25)A former reliever at Ole Miss, the 2025 third-rounder has taken some time to find his rhythm in a larger role in his first full season but looked like he was clicking with a 3.31 ERA over his final four starts (21 1/3 innings) with Single-A Daytona. Morris was promoted to High-A Dayton and continued to be solid with one earned run allowed on two hits and two walks over 5 2/3 frames in his Midwest League debut last Saturday. Morris shows all three variations of a fastball but relies most on his 88-90 mph cutter.NATIONAL LEAGUE WESTD-backs: David Hagaman, RHP (No. 4)Acquired from the Rangers a year ago as part of the Merrill Kelly Deadline deal, Hagaman is hitting his stride in the D-backs organization now that he’s at Double-A. The 23-year-old led the Minors in strikeouts in August with 48 over 31 1/3 innings, and he fanned exactly 10 in three of his six outings during the month. He finished August with a 2.30 ERA and 1.18 WHIP. Hagaman – who has multiple weapons with above-average potential in his fastball, curveball and slider – is up to a career high 96 1/3 innings on the season as a whole and could be an offseason Top 100 contender given the quality of stuff and results in ‘26.Dodgers: Cam Leiter, RHP (No. 16)Leiter is seeking to become the fifth member of his family to pitch in the Majors, following uncles Al and Mark and cousins Jack and Mark Jr. The Dodgers are handling him carefully after shoulder issues plagued him at Florida State, but he was utterly dominant in August with a 0.63 ERA, .104 opponent average and 23 strikeouts in 14 1/3 innings at two Class A levels. The 2025 second-rounder owns a pair of fastballs that sit at 97 mph and max out at 100, as well as a pair of quality breaking pitches in an 86-88 mph slider and a 78-82 mph curveball.Giants: Jacob Bresnahan, LHP (No. 9)After winning pitcher of the year awards in 2024 (Rookie-level Arizona Complex League) and 2025 (Single-A California League), Bresnahan now ranks among the Minor League leaders in opponent average (.186, third), ERA (3.04, sixth), WHIP (1.08, ninth) and strikeout rate (30 percent). Acquired from the Guardians in exchange for Alex Cobb in 2024, he recorded a 3.33 ERA, .182 opponent average and 33 strikeouts in 27 innings last month between Double-A and Triple-A. His best pitches are a mid-80s kick change with nasty depth and a 92-97 mph fastball with some of the best carry in the Minors.Padres: Lan-Hong Su, RHP (No. 9)Su signed with the Padres for $775,000 out of Taiwan last October, and it’s been a slow build for the 19-year-old ever since. After opening the season in the Arizona Complex League, he allowed 12 earned runs over 7 2/3 innings in his first three starts with Single-A Lake Elsinore from June 29 to July 9. Since then, he’s allowed only six earned runs total over his last seven starts, and in August specifically, he had a 3.55 ERA with 20 strikeouts and only three walks over four outings (12 2/3 innings). Known for his pair of breakers as an amateur, Su has found nice success with an upper-80s splitter of late in the California League.Rockies: Mason Adams, RHP (No. 20)The Rockies picked up Adams from the White Sox at the Deadline for Brenton Doyle, and it hasn’t taken him long to make a good impression. Adams had a 2.08 ERA and 0.92 WHIP with 13 strikeouts and only three walks in his first three starts in the system with Triple-A Albuquerque, and that was enough for Colorado to push him to the Majors for the first time. The control artist has found modest success over two starts in the bigs through his six-pitch mix and should keep getting looks the rest of the way, provided he stays healthy after missing 2025 due to Tommy John surgery. He’s at 71 innings for the season across all levels.