Roger Federer hits two outrageous drop shot winners in a row against Richard Gasquet in Madrid.

Stan Wawrinka turns defense into attack against Filip Krajinovic in Miami.

Perfect passing shot from Pablo Cuevas against John Isner in Madrid.

Marin Cilic saves four match points before clinching victory over Martin Klizan in the first round on Madrid's clay.

Very nice rally between Fabio Fognini and Kei Nishikori in Miami