A coroner has ruled late former baseball player-turned-actor Brad Lesley died of a heart attack.

Lesley, who played for Ohio's Cincinnati Reds and the Milwaukee Brewers in Wisconsin, passed away on 27 April (13) at the age of 54, and it was initially reported by his ex-wife Chiho Svimonoff that the star suffered from kidney failure.

However, the Little Big League actor's death certificate reveals he actually succumbed to an untreated case of coronary artery disease, which caused the athlete to go into cardiac arrest, according to Tmz.com.