We all know the NFL stars who generate SportsCenter highlights on a regular basis. Every week, though, some performances make us say, "Who was that?"
It could be the undrafted rookie receiver who catches a long touchdown pass, the backup quarterback who piles up stats or the journeyman linebacker who seals a victory with a big play.
This is for them.
Take a look at Week 15's unheralded ballers, starting with two rookie backup running backs who are taking full advantage of their opportunities and a backup QB who helped play spoiler in knocking off a division opponent.