April 19 (UPI) -- World No. 1 Novak Djokovic suffered a shocking upset to Russian men's tennis player Danill Medvedev on Friday at the Rolex Monte-Carlo Masters.
Medvedev won the quarterfinal match 6-3, 4-6, 6-2 over the Serbian. He broke Djokovic's serve five times en route to his first ATP Masters 1000 semifinal appearance. Medvedev will need to get past Dusan Lajovic to reach the final.