How dominant has LeBron James been for the Cleveland Cavaliers? You can make a good case that he is the most crucial player to a team in N.B.A. finals history.
One way to measure a player’s importance is usage percentage, which estimates how many of a team’s offensive plays are used by a player, whether by shooting the ball, getting to the free-throw line or making a turnover.
Though players with high usage percentages are usually stars, a big figure is not necessarily a good thing. If you suited up for the Cavaliers and shot the ball every time you touched it, you would record a high usage percentage, though you would very likely not be of much help to the team.