VIDEO: Djokovic takes hard fall early in US Open final

With the US Open men's final underway at last after a three-hour and 19-minute rain delay, it looks like the crew at Flushing Meadows may have missed a spot when drying off the court at Arthur Ashe Stadium.

Up an early break in the first set, world No. 1 Novak Djokovic took a hard fall. It drew blood on Djokovic's right elbow, and he was later treated by his trainer. Second-seed Roger Federer went on to break back, evening the first set at 2-all.

We'll have to wait and see if the elbow becomes a nagging issue for the Serbian as the match continues.