In the final minutes of Monday night’s Eastern Conference Semifinals Game 4 between the Boston Celtics and the New York Knicks, the Celtics suffered a series blow that extends far beyond the game or even the series.

Hamstring pulls, ligament tears and ankle sprains can be as formidable an opponent for NFL teams as a high-scoring offense or stingy defense.

U.S. badminton player Beiwen Zhang was forced to retire in the round of 16 on Wednesday, after suffering an apparent ankle injury in her match.