Wiktionary
n. 1 (alternative form of roleplayer English) 2 (context basketball English) A player who isn't one of the best players on the team, but still contributes to the team in a meaningful way
WordNet
Usage examples of "role player".
No role player, no matter how dedicated, was going to get out of bed at the crack of dawn and do hard labor in the coarse, awkward, bundly clothes they wore.
I conjecture that the normal prediction of that vision was interrupted by the role player's imposition of her own concerns so that the sequence became invalid at that point.
And by the way, I saw a man today whos as good a role player as you are.
Of course it was possible to put that more kindly, to say that he was a good role player.
But he was frightenedshe knew it, could feel itfrightened beyond the point where any role player would forget the bounds of a nonindustrial persona and simply say, Shut off the flashlight.
Elizabeth turned her attention back to the young stud of a pilot who was exerting himself like a lead role player in a hard-core X-rated movie.