Ben Simmons
Simmons and the Sixers had one of the most dramatic long-term dramas on this list. Philly infuriated the Australian NBA star when they considered trading him for James Harden. This made Simmons feel unloved and disposable. It affected his performance and finally, he went on strike.

The Ozzie star failed to report to training camp and began a long holdout. After a year of tension between the two parties, the Sixers traded him to Brooklyn. Ironically, they did get James Harden as part of the deal. This was a bitter fallout that didn’t help either Simmons or the 76ers (via CBS Sports).