Nick Kyrgios in his works, from Tweener to winner against Dusan Lajovic in Miami.

Perfect lob from Caroline Wozniacki against Lucie Safarova in Miami.

Kei Nishikori can't even react to this mammoth forehand from Fernando Verdasco at Miami.

Very nice rally between Noak Djokovic and Alexandr Dolgopolov in Rome.

That's why Naomi Osaka is world number 1. Perfect control from the Japanese against Danielle Collins at Indian Wells.

Amazing rally between Juan Martin Del Potro and Nicolas Jarry at Roland Garros.