Baoma Corp's Nysos (Nyquist) worked six furlongs in 1:11.20 (1/4) Sunday at Santa Anita and remains on track for the GI Breeders' Cup Dirt Mile, according to trainer Bob Baffert.“Very happy with the work,” Baffert said.The 4-year-old Nysos, whose lone loss to date is a narrow runner-up effort behind Mindframe in the GI Churchill Downs Stakes in May, is coming off wins in the GIII Triple Bend Stakes and GII San Diego Handicap.Shortly after that work, Baffert sent out Citizen Bull (Into Mischief) to work the same distance in 1:11.80 (2/4). Last year's champion juvenile, coming off a 5 1/2-length victory in the Aug. 31 Shared Belief Stakes, is also aiming for the Dirt Mile.Baffert also sent out 'TDN Rising Star, presented by Hagyard' Boyd (Violence) out to work Sunday at Santa Anita. In his first work since romping in his Sept. 7 unveiling, the 2-year-old went three furlongs in :37.60 (16/20).Also working at Santa Anita Sunday ahead of the Breeders' Cup, Straight No Chaser (Speighster) worked four furlongs in :47.20 (1/69) as he prepares for a defense of his title in last year's GI Breeders' Cup Sprint.“He worked really well,” trainer Dan Blacker said. “We're on target for the Breeders' Cup [Sprint].”Straight No Chaser finished third as the favorite in the Sept. 28 GII Santa Anita Sprint Championship last time out.Motorious (GB) (Muhaarar {GB}), preparing for the GI Breeders' Cup Turf Sprint, blitzed five furlongs on the synthetic training track in :58.60 (1/19) for trainer Phil D'Amato. The 7-year-old gelding, who was a narrowly beaten second in last year's Turf Sprint, most recently won the GIII Green Flash Stakes via disqualification Aug. 30 at Del Mar.The post Nysos, Citizen Bull Work for Breeders’ Cup Dirt Mile appeared first on TDN | Thoroughbred Daily News | Horse Racing News, Results and Video | Thoroughbred Breeding and Auctions.