Success at the free-throw line doesn't necessarily guarantee overall success — or more wins than defeats.

But, of course, knocking down free throws at a high percentage is one of many important skills that coaches of all levels emphasize to their players.

In the NBA, 23 of 30 teams were shooting greater than 75 percent at the charity stripe through Tuesday, with six more teams knocking down more than 72.3 percent. The Boston Celtics sit atop the chart at 81.7 percent. (Only the Miami Heat at 69.3 percent were below 70 percent.)