Saturday's program at Churchill Downs is meant to showcase the 'Stars of Tomorrow' and Juddmonte's bred-in-the-purple Chasten (f, 2, Into Mischief--Lockdown, by First Defence) shaped as just that, as she did her best work through the line to score by a widening margin and earn the 'TDN Rising Star' badge. The half-sister to champion Idiomatic (Curlin), MGISW, $3,944,190, appeared to get bounced around at the break of the seven-furlong contest and was clearly last early before making progress and improving a spot or two down the backstretch. Asked to come...