© ATP Tour

Novak Djokovic has spent plenty of time in the Novak Tennis Center's all-purpose gym this week in Belgrade during the Serbia Open.

Up Close & Personal With Novak Djokovic In Belgrade

The top seed will play Kecmanovic in the quarter-finals on Friday

From basketball star to actor, Novak Djokovic is playing plenty of roles beyond the tennis court at this week’s Serbia Open.

The World No. 1 is having a blast at the ATP 250 being held in his hometown of Belgrade where his brother, Djordje Djokovic, is the tournament director. Novak has been spotted multiple times on the basketball court at the Novak Tennis Center, where he has showed a crisp jumpshot and touch around the rim.

Djokovic’s other brother, Marko Djokovic, wanted to test his hand as a videographer, and Novak was a willing subject. The 18-time Grand Slam winner did some exercises just for his brother.

Watch Djokovic's Behind The Scenes Clips:

Two-time Belgrade champion Djokovic has been all-business on the court. Djokovic defeated Soonwoo Kwon 6-1, 6-3 to reach the quarter-finals, in which the top seed will play countryman Miomir Kecmanovic.

More stories like this in: