They are glue guys, uniters. The ones most responsible for ensuring as seamless a transition from the starting unit to the reserves. They are sixth men, and even though they come off the bench, in several cases and for several teams, some of them are even more important, more valuable than some of those who play ahead of them.
Going back to the 1982-1983 season after which the first ever Sixth Man of the Year award was given to the Sixers Bobby Jones, this role - the first, most key substitute on each team - has been recognized as premium in the NBA.
Players like Williams, James Harden, Jason Terry and others play this role as well as anyone in the league. So with that, let's take a look at some of the best of the NBA's sixth men.