The Heat went into Monday 3-3 in Butler’s absence.

Butler had missed at least 18 games in each of his first four years with the Heat entering this season.

Highsmith had appeared in four consecutive games before sitting out Monday, after missing the five previous games with a lower-back contusion. Overall, Highsmith has missed 11 games this season, including time missed at the start of the season with a sprained left knee.

Heat's Josh Richardson out against Detroit Pistons in opener

Richardson missed his sixth game of the season, having appeared in four consecutive games before being held out Monday.

In addition, the Heat remain with guard Dru Smith for the balance of the season due to the knee injury sustained in the November 22 road victory over the Cleveland Cavaliers. Smith is scheduled for knee surgery Friday.

The timing of the latest absences come with the Heat idle on Tuesday and Wednesday before opening a five-game western swing on Thursday night against the Golden State Warriors. They then do not play again at Kaseya Center until a Jan. 8 game against the Houston Rockets.