Juan Martin del Potro delivers a 172 km/hour strike against Novak Djokovic in the quarter-finals on the clay of Rome.

Gael Monfils flying smash at training in Rome.

Watch Roger Federer save break point in style against Hubert Hurkacz in Indian Wells quarter-finals.

Dominic Thiem shows all his power to outplay Pablo Cuevas with an enormous backhand on the clay of Rome.

Here are two unreal points from Nick Kyrgios against Alexander Zverev at Indian Wells.