Robert “Tractor” Traylor battles Justin Reed of the Celtics in a 2005 game. (MARK DUNCAN / AP)

Robert “Tractor” Traylor, a power forward who played for the University of Michigan and for seven seasons in the NBA, has died, according to police in Puerto Rico.

Traylor, 34, had been playing for the Vaqueros de Bayamón in Puerto Rico's BSN League and his body was discovered in his apartment earlier today. The cause of death appears to have been a heart attack, according to the team and police. He had a surgical procedure on his heart in 2005.

Traylor, who was recovering from a heel injury, had not been with the team. His body was found at his oceanfront apartment in San Juan by friends who went looking for him after he had been missing for three days.

Traylor led the Wolverines to the National Invitation Tournament title game in 1997 and was the sixth overall pick by the Dallas Mavericks in the 1998 NBA draft. Dallas immediately traded him to the Milwaukee Bucks for Pat Garrity and the rights to the ninth pick, Dirk Nowitzki.

Traylor’s NBA career never flourished; he played 438 games for five teams across seven seasons. He averaged 4.8 points and 3.7 rebounds.