As we are talking Saterday meetings, go straight to what the top Jocks are riding. The top ones will get on the best rides regardless of Trainer [the good trainers just happen to have the best horses most of the time].
Cory Brown won the three Sydney Group 1 races [in a row] yesterday.
Bowman, Beadman, Cassidy, Quinn, Munce, Beasley and Brown x3 won all the races. In Melb. Prebble won a treble [had to get that one in], Baster, Nikolic, King. Oliver and Findlay the last race.
Jockey's do the form and you usely find a top jock on the winners because they get the first choice of rides. Forget the apprentices [except for Zac Purton] on Sat.

Cheers.