Dak Prescott RARELY makes a mistake ... but he accidentally elbowed a clubgoer in the head Saturday night ... and immediately apologized for it.
Dak and Ezekiel Elliott were at Dos Jefes in Dallas on Saturday night (don't worry, they didn't have a game on Sunday) ... and were hanging out with a group in an upstairs area.
As the woman was going to pick up a jacket off a couch, Dak turned around and accidentally popped her in the face with his elbow.
You can see in the video it appears the two made up -- and were even laughing about it.
Still, might wanna ice up ...