Bleacher Report's Howard Beck passed along the news. Whiteside, 26, was ejected early in the fourth quarter for purposefully elbowing Marjanovic in the face while the two tussled for rebounding position.
The Heat sent Whiteside home early from their road trip following the incident.
"That's something we'll deal with with Hassan," Heat head coach Erik Spoelstra said on Feb. 10, per Michael Wallace of ESPN.com. "We don't condone that kind of play. We've been through this with him before. But it's a disappointing play. That's not a basketball play."
Winderman noted that Whiteside checked on Marjanovic after the play:
SunSentinel has been told that Whiteside reached out to Marjanovic immediately after incident, was told by Marjanovic that he was not hurt.— Ira Winderman (@IraHeatBeat) February 11, 2016
Whiteside, who has been one of the NBA's best stories over the last two seasons, has a checkered history of on-court incidents. He was suspended one game last March for hitting the Boston Celtics' Kelly Olynyk, which came roughly a week after he got into a fight with the Phoenix Suns' Alex Len. Rumors of immaturity plagued his first run in the NBA, which saw him flame out after spending parts of two seasons with the Sacramento Kings.
You never turn your back on your teammates. But, at the same time, you're not always in a position where you can grab somebody's hand and walk 'em through every step of the way. Sometimes you have to live your decisions that you make. He has to live with that. Whatever consequences come with it, he has to deal with it.
Whiteside's play on the court has him in line for a massive contract this summer. He is averaging 12.2 points, 11.0 rebounds and an NBA-best 3.9 blocks per game while holding opponents to 47.9 percent shooting at the rim, per NBA.com. Miami's defense has interestingly been a little worse with him on the floor this season, per Basketball-Reference.com, but that's in part because of the starting five's leaky perimeter. Whiteside also has a frustrating propensity for chasing blocks rather than making the smart basketball play.
Either way, the Heat would be lost without his production. The two-year contract he signed in Miami last season ranks among the best in basketball, to the point that he's well worth the occasional headache.
If the Heat are looking for a way to spin the situation positively, Whiteside's reputation as a head case may wind up deflating his value on the open market. Teams are increasingly wary of volatile locker room presences, and it's clear at this point Whiteside has developed a shaky reputation.
Follow Tyler Conway (@jtylerconway) on Twitter