Injured Player: When Do You Stop Play?

[26 Year Gap]

Had 2 situations like this today. First one, B1 is down near division line in backcourt. A1 is dribbling paralell to division line near the circle. I killed the clock. 2nd one, B2 is down near the foul line. A1 is contested by B3 near the division line in the backcourt. I killed it. I would rather err on the side of caution although Coach A claimed that they had a fast break going. I have never seen a 5 on 4 fast break with the ball closely contested in the backcourt near the division line and the other 7 players in the forecourt. Then Coach A says that the opponents are going down on purpose to stop play.