Chriss and Ibaka were jockeying for position for the throw, which wound up out of bounds.
Kawhi Leonard, who did not play in the Raptors' win against Miami on Sunday, is averaging 31.7 points and 9.0 rebounds against Cleveland this year. To make matters worse, Cleveland shot an impressive 18-for-41 (43.9 percent) from beyond the arc to outscore Toronto 54-33 from long range.
Toronto's Serge Ibaka and Cleveland's Marquese Chriss were ejected for fighting late in the third quarter. Ibaka fell and shoved Chriss upon getting up, which led to punches being thrown by both players.
Cleveland opened up an 11-point lead early in the third period with Sexton and Zizic combining to score seven consecutive points.
Neither player was available for comment following the game.
Cleveland took a 91-77 lead into the fourth quarter.
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Neither Ibaka nor Chriss spoke with the media after Monday's game, but Raptors Coach Nick Nurse said, "Listen, it's always going to be concerning when something like that happens".
The Raptors are vying for an Eastern Conference win this season, as their team is second in the East now, with a 48-20 record. The big difference was turnovers; Toronto committed 11 to just two by Cleveland in the first half.
Led by Kawhi Leonard, the Raptors are confident of going all the way in the east and then maybe even uprooting the Warriors when it comes to the National Basketball Association finals (if the Warriors make it this time). Toronto tied a team record with 21 made 3-pointers against the Heat on Sunday.
The Raptors are now second in the East, three games behind the Bucks with 16 games remaining in the regular season.
Raptors: G Fred Van Vleet (ligament tear in left thumb) missed his 11th straight game.