Isner, Querrey and Lajovic play Olympic charades

John Isner, Sam Querrey and Serbia's Dusan Lajovic all played Winter Olympics charades ahead of the first-round Davis Cup tie between the USA and Serbia. The Americans acted out the winter sports, while Lajovic did the guessing.

Ice hockey, ski jumping and curling were easy points, but biathlon and bobsled were trickier. Speed skating was the hardest of them all."Uh, you're a chicken?" Lajovic said.

Figure skating was the funniest, as Querrey twirled around Isner in an impromptu pairs routine.

Isner and Lajovic actually played each other in Friday's second rubber, with Isner getting the win in dramatic fashion, 7-6 in the fifth. The U.S. would sweep the tie, 3-0 before Serbia got on the board with a singles win from Pedja Kristin over Steve Johnson.