The San Antonio Spurs beat the Boston Celtics 125-116 last night in NBA on NBC’s Coast 2 Coast Tuesday primetime game, but the most exciting action arguably came in the game’s second quarter when Celtics guard Jaylen Brown was quickly ejected from the game following back-to-back technical fouls.

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The match-up itself was a high stakes primetime battle, featuring two of the top four teams in the league this season. The Spurs hold the NBA’s second-best record on the season at 48-17 (just behind the Oklahoma City Thunder’s 51-15 record), while the Boston Celtics sit just two spots below them at 43-22 on the year.

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Before being elected, Brown had eight points, two rebounds, seven assists and one steal in 13 minutes of game time.

Why was Jaylen Brown ejected from the Celtics vs. Spurs game?

The Celtics lost one of their star players early in the game, when guard Jaylen Brown was ejected after passionately arguing that he had been fouled by Spurs point guard Stephon Castle. The tight defensive coverage resulted in Brown stumbling out of bounds and turning the ball over, and no foul was called on the floor. Brown contested that he had been pushed out of bounds. Watch the play for yourself right here.

Brown continued arguing his case to official Tyler Ford while going down the other end of the floor, with Ford eventually whistling Brown for a technical foul for continuing to argue the call. After that, Brown became more passionate making his case over the alleged foul, which led official Suyash Mehta to whistle Brown for a second technical foul.

Per NBA rules, two technical fouls for “unsportsmanlike” conduct in one game results in a player ejection. So, Brown was ejected and unable to play for the remainder of the game.

The officiating crew noted that “in live play, we did not observe any illegal contact,” in the no-call play that led to Brown’s reaction, via ESPN. Per the officials, Brown received the first technical foul for “aggressively pointing and using profanity and resentment to the no-call,” while the second tech came after the player “aggressively approached a game official while pointing and using profanity.”

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After the game, Brown took to social media to express his displeasure with the situation.