"She's G-R-E-A-T with an exclamation point," Mott said of the Empire Maker' filly's second straight win in the Ladies' Classic.
The trainer said he was a little surprised that Royal Delta would be on the lead from the outset in the race.
"That certainly wasn't the plan, but it was part of the plan," Mott said. "The plan was to let her run where she's comfortable, and she was comfortable in that spot. We didn't know exactly what position she was going to be in, but we thought that there would perhaps be a horse or two there. And certainly we thought that Questing would go for the lead, but she didn't show up on the day."
In updates on other winners from the Nov. 2 World Championships card, trainer Richard Mandella said Beholder came out of her one-length victory in the Juvenile Fillies (gr. I) "in terrific shape."
"It's all good today," Mandella said of his seventh overall Breeders' Cup triumph, all of which have come at Santa Anita.
"I spoke to (jockey) Garrett (Gomez) by phone prior to the races yesterday and told him I thought she'd make the lead pretty handily and that I didn't think any of them would want to run with her. The issue was getting her to settle and, the way it worked out, Garrett sure got her to do that.
"We'll give her a break now and bring her back here for the Santa Anita winter meet," Mandella said. "She's earned some time off. We can think about a possible Eclipse Award for her now and start dreaming about possibly winning the Kentucky Oaks (gr. I). It sure is nice when you've got one like her in the barn."
Marathon (gr. II) winner Calidoscopio was doing "awesome," according to Saul Marquez, the agent for winning riding Aaron Gryder, who has also served as a translator for trainer Guillermo Frenkel.
Calidoscopio, who became the first horse to win a Worlds Championships race after having last raced in South America, will return to Betfair Hollywood Park and a decision will be made later on what is the next move.
Trainer Chad Brown said Martin Schwartz's Zagora was fine after her impressive Filly & Mare Turf (gr. IT) victory, giving credit to jockey Javier Castellano.
"Another great ride by Javier Castellano. Both his mounts for me yesterday (Watsdachances, second in the Juvenile Fillies Turf) he put me in great position for the stretch drive and that's all I asked. Both horses fired for him, Zagora in particular. Her last quarter had to be :22 and change the way she came home. I'm just very, very proud of her race, start to finish.
"For her to be my first grade I winner last year (in the Diana) and to win a race of this magnitude, she'll always have a special place in our barn," he said. "My entire staff just loves the filly and we're proud of her."
Trainer D. Wayne Lukas said Juvenile Sprint winner Hightail "came out of the race in great shape. He's a nice colt and he ran well. I liked his fight down the lane. I think he has a good future."
Lukas said Hightail could run in the Kentucky Jockey Club Stakes (gr. II) Nov. 24 at Churchill Downs.