Japanese tennis star and former world No. 4 Kei Nishikori has announced on social media that he will retire at the end of the season, bringing to a close one of the most successful careers in Japanese men’s tennis history.

Elena Rybakina, the Australian Open champion, suffered a surprising exit from the Madrid Open after a 7-6 (10/8), 6-4 defeat to Anastasia Potapova in the fourth round on Monday.

Belinda Bencic and Hailey Baptiste are set to meet for the first time in the round of 16 at the Madrid Open on Monday.

Alexander Zverev advanced to the Monte Carlo Masters semi-finals after defeating Brazilian teenager João Fonseca in three sets on Friday, reaching the last four of the tournament for the third time in his career.

Nineteen-year-old Joao Fonseca reached the quarter-finals of an ATP Masters 1000 event for the first time with a commanding 6-3, 6-2 victory over Matteo Berrettini in Monte Carlo on Thursday.