PARX racetrack is centre stage in the US this weekend with two three-year-old contests that may have a say in the end of year awards.

The mid-week withdrawal of the disqualified Kentucky Derby winner Maximum Security with a trapped colon has robbed the $1 million Pennsylvania Derby (10.45 Sky Sports) of much of its interest as it also sees the reappearance of the Preakness winner War Of Will and the horse who went off favourite in Kentucky, and for the Preakness, the Bob Baffert-trained Improbable.