Multiplication, who won the Mike Lee Stakes at Belmont Park on June 26, died of an apparent heart attack after breezing at Belmont on Saturday morning.
A New York-bred, Multiplication had completed a six-furlong bullet work in 1:11.56 on the main track and was walking back to the barn when he collapsed on the track. Dr. Celeste Kunz, the chief examining veterinarian at the New York Racing Association, said it appeared Multiplication suffered a massive heart attack.