Djokovic hits the streets and stages of Belgrade

Novak Djokovic loves going back to his home city of Belgrade, and every visit is memorable when he spends so much of the season on the road. This time around he's truly maximizing his time.

The recent Australian Open champion hit around with local children on the streets. The youngsters were, surprisingly, not too shabby at going toe-to-toe with the world No. 1.

It's surprising that Djokovic still had energy to hang out with the children, seeing as earlier that night he and his wife, Jelena, took the stage in the Ateljeu 212 theater to sing, something he has been doing quite a bit lately.

Djokovic also sang at the Sanremo festival in Italy a couple of weeks ago. Maybe he's planning on retiring and becoming a professional singer? Unlikely considering he recently won the Australian Open for his 17th Grand Slam.