Which tennis player has won the Grand Slam title in men's singles 2019?
Options
A. Rafael Nadal
B. Roger Federer
C. Novak DJokovic
D. Daniil Medvedev
Correct Answer
Rafael Nadal
Explanation
Rafael Nadal defeated Daniil Medvedev in the men's singles title at the 2019 US Open. It was Nadal's 19th Grand Slam singles title, and fourth US Open title.