This week on HorseCenter, Brian Zipse and Matt Shifman handicap and offer suggested wagers for a pair of Grade 1, $1 million races at Parx. Thorpedo Anna is the headliner in the Cotillion Stakes, and Dragoon Guard looks to keep his winning streak going in the Pennsylvania Derby.

A field of 11 was drawn for Saturday’s 1 1/8-mile Pennsylvania Derby. Brad Cox’s Dragoon Guard has four wins heading into the biggest race of the year at Parx. He will face Grade 1 competition for the first time when he meets the Preakness winner Seize the Grey as well as Stronghold, who won the Santa Anita Derby (G1).

Thorpedo Anna, the top 3-year-old filly in the country, will be a heavy favorite in the field of eight in the Cotillion when she returns to face fillies after the narrow defeat against males in the Travers (G1).