“This is an example of a Defensive Three-Seconds violation. The highlighted defensive player, Chris Silva, does not actively guard an opponent while he’s positioned inside the 16-foot key area for longer than the allotted three seconds. Note that the count was temporarily suspended here as the dribbler, Yogi Ferrell, started to drive to the basket. It is temporarily suspended because the defender would have been imminently legal had the dribbler continued on toward the basket. But when the dribbler ends his drive and passed the ball, the count resumes where it was when it was suspended, and the violation was correctly called shortly thereafter. Defensive Three-Seconds is called when a defensive player does not exit the 16-foot key area, or actively guard an opponent, within three seconds”