The emergence of Stefanos Tsitsipas has been a boost for Alexander Zverev, who faces Novak Djokovic in the last eight of the French Open.
Salvatore Caruso gave Novak Djokovic more than he bargained for in round three of the French Open, but the Serbian still advanced.
Alexander Bublik kept Dominic Thiem on his toes as Novak Djokovic swept Henri Laaksonen aside on Thursday.
There was a reunion for Alexander Zverev and some, ahem, 'ancient' history, at the French Open on Tuesday.
Top seed and four-time champion Novak Djokovic was always confident he could overcome Juan Martin del Potro in Rome on Friday.
It was a match of the highest quality in the Internazionali d'Italia quarter-finals, but Novak Djokovic outlasted Juan Martin del Potro.
Marin Cilic and Karen Khachanov ended their losing streaks in Madrid, while Juan Martin del Potro claimed a doubles win with Kei Nishikori.
Juan Martin del Potro's team provided an update on the 2009 US Open champion via Dr Angel Cotorro on Monday.
Knee injuries have prevented Juan Martin del Potro and Rafael Nadal taking their place in the draw in Miami.
A knee injury means Juan Martin del Potro will not be able to seek back-to-back Indian Wells crowns this year.