Many weren't sure what to expect from the Marcus Mariota-led Washington Commanders against the Las Vegas Raiders, and what they got was an efficient performance that saw the offense hang 41 points on the Raiders' defense.With Mariota filling in for the injured Jayden Daniels, the offense didn't miss a beat, with Kliff Kingsbury's unit again rushing for over 200 yards, the second time they've done it in three weeks.Given that the Commanders had a backup quarterback under center and still managed to score 41 points, for CBS Sports' John Breech, only one grade would suffice."When you win a game with your backup QB in the NFL, that's impressive and when you win by 17 points, you get an "A." Breech writes. "With Jayden Daniels on the sideline, the Commanders turned the ball over to Marcus Mariota, and all he did was lead Washington's offense to 400 yards."This team looks as dangerous as ever."MORE: Ravens' Derrick Henry puts Browns disaster behind him with blistering first quarter vs. LionsWell, with Mariota in this sort of form, going 15 of 21 for 207 yards and a touchdown, we think Daniels can take his time returning from a knee sprain suffered against the Green Bay Packers.With the Atlanta Falcons up next, the Commanders can afford to play the cautious approach with their franchise quarterback and get him 100 percent healthy for the following week against the Los Angeles Chargers.Of course, Daniels will want to play, but given we are only three weeks into the season, if Jayden isn't 100 percent, then the franchise can feel confident in their ability to go on the road and win in Atlanta.The most important position on a roster is the backup quarterback, and Mariota is proving exactly why that's the case.MORE NFL NEWS: Caleb Williams' breakout game? Bears QB lights up Cowboys with four touchdowns in career day | Sporting NewsJalen Hurts, A.J. Brown silence Eagles critics again with Super deadly offense | Sporting NewsNFL blocked kicks today: Jordan Davis' heroics highlight best special teams plays in Week 3 | Sporting NewsCowboys lose CeeDee Lamb for 3–4 Weeks: Who will step up in his absence? | Sporting NewsFantasy Football Usage Week 3: Targets, touches, snap counts utilization trends | Sporting News