a) Alexander Zverev
b) Stefanos Tsitsipas
c) Rafael Nadal
d) Roger Federer
World number one Novak Djokovic will face off with defending champion Rafael Nadal in the semi-final of Men’s singles in the ongoing French Open on June 11, 2021. This will be the 58th time when Djokovic and Nadal lock horns and it will be their ninth face-off in Paris.