Kennedy passed out at home and was brought to a hospital, Hillsborough County sheriff’s spokeswoman Debbie Carter said. She had no further details.

Kennedy’s agent, Damon Lapa, told ESPN.com that Kennedy died while at home with family in Florida. He did not return phone calls and an e-mail from The Associated Press.

“We were terribly shocked,” Blue Jays president Paul Godfrey said. “From what we understand he was in Bradenton … to be the best man at a wedding today.”

Godfrey said he didn’t have any particulars on the cause of death.

“When a 28-year-old man dies it’s terrible,” he said.

The left-hander was 43-61 in seven major league seasons with the Tampa Bay Rays, Colorado Rockies, Oakland Athletics, Arizona Diamondbacks and Toronto Blue Jays. Kennedy compiled a 43-61 record with a 4.79 ERA, pitching 908 2/3 innings over 222 career appearances.

ESPN.com first reported the news of his death.