Players from the Chicago Bulls contacted the National Basketball Players Association about what they considered to be extreme tactics by Jim Boylen.
Boylen was elevated to head coach last week, but he's already had turmoil with his players.
Following a 56-point loss on the second night of a back-to-back, Boylen called for a Sunday practice.
Boylen held three two-and-a-half-hour practices in his first week that included extra wind sprints and players doing military-style pushups.
One of the veterans on the Bulls initiated a group text relaying that if any players showed up on Sunday prepared to practice, he would personally fine them, and the players agreed.
Boylen was altered to the plans and he refused to relent.
Robin Lopez was the leader of getting the players to back down and to merely show up on Sunday without the intention to practice.
Zach LaVine and Justin Holiday were the most vocal in expressing their issues with the practice.
Boylen has repeatedly referenced his experience with the San Antonio Spurs, and what he learned from Gregg Popovich.