The former UNLV star and 13-year NBA vet died Tuesday at the age of 47 after collapsing in a suburban Pittsburgh gym, according to a report from Pittsburgh’s WTAE-TV.

Armen Gilliam, a 6-foot-9 forward from Bethel Park who was known as “The Hammer” for his physical style of basketball, died Wednesday night. He was 47.

Police said Gilliam had a heart attack and collapsed while playing basketball at LA Fitness in Collier Township. He was rushed to St. Clair Hospital, where he was pronounced dead.