POTOMAC, Md. (AP) — A surprise player has joined President Barack Obama's regular weekend golf game: Vice President Joe Biden.

The White House says the Nos. 1 and 2 leaders of the free world teed off Saturday at TPC Potomac at Avenel Farm, a private golf club in Potomac, Maryland.

Two aides rounded out Obama's foursome.

Obama usually plays with aides at when he's at the White House. His golf party often includes bigger names when he plays away from home.

Biden was spending a rare weekend in the nation's capital.

The vice president and his wife, Jill, usually spend weekends at their Wilmington, Delaware, home.