Jeter, the popular 9-year-old gelding named after the popular former Yankees shortstop Derek Jeter, died earlier this week, trainer Ed Barker said Thursday.

Jeter was entered to run Thursday at Aqueduct.

According to Barker, Jeter showed signs of colic on Tuesday morning. A veterinarian who was on the other side of the barn, tried to treat Jeter. According to Barker, the horse reared and fell.

"I personally think he had a heart attack," said Barker, who said a necropsy would be performed.

Jeter started 69 times, winning 8 races with 13 seconds and 14 thirds. He earned $426,049.

"He's going to be missed, I'll tell you that," Barker said. "He was an old war horse."