Haslem's second rebound on Wednesday night against the Milwaukee Bucks was the 4,808th of his career, one more than Alonzo Mourning grabbed in his tenure with the Heat.
Haslem has spent all 10 of his pro seasons in Miami, and is the first undrafted player to lead an NBA franchise in total rebounds. Among undrafted players in NBA history, only Moses Malone, Ben Wallace and Brad Miller have more rebounds than Haslem, a native of Miami.
The Heat prepared an in-game video to commemorate Haslem's record. He reached the mark in his 606th career game, which is also a franchise record, one ahead of Heat co-captain Dwyane Wade.