While the $1 million Pennsylvania Derby (G1) and Cotillion (G1) are the richest prizes at Parx Saturday, notable names will appear on the stakes-laden undercard as well.

Firenze Fire will break from the rail in his title defense of Friday's $300,000 True North S. (G2), a 6 1/2-furlong dash that counts as one of six victories the Grade 1-winning six-year-old has made to the winner's circle in nine outings over the Belmont Park strip. The Kelly Breen charge prepped for this with a 3 1/4-length score in the May 8 Runhappy (G3).

Four dirt stakes for Thoroughbreds will be offered on Saturday’s Preakness undercard at Pimlico. Hall of Fame trainer Steve Asmussen has contenders in three of them.