Daniil Medvedev loses 6-3 and 7-5 to Karen Khachanov in Monte Carlo Masters. Russian angry with the umpire and the ATP supervisor after controversial ruling.

Russian booed by the public as he leaves the tournament after losing in the round of 16. He was the fourth seed after beating Gael Monfils in the first round of the Masters 1000 tournament in Monaco on his debut in the tournament. The Russian was booed as he left the court after losing to his compatriot in the last 16 of the Monte Carlo event. The match ended in a tie-break, with the Russian losing the match 6-2. The final score was 6-4, 6-7 (4-7), 7-6 (7-5), 6-1. The last match of the tournament will be played on Sunday, April 11. The winner of the match will face either Novak Djokovic or Stan Wawrinka in the quarter-finals.