Djokovic stunned by qualifier Klizan

A day of upsets in all tournaments:

Barcelona 

Wildcard Novak Djokovic lost his second round match, after a first round bye, succumbing 6-2 1-6 6-3 to qualifier Martin Klizan, currently ranked 140 in the world.  Djokovic is not performing well, and lack of match practice because of this early exit makes his hopes of success at Roland Garros even less likely.

Other surprises in Spain included Stefano Tsitsipas defeating Diego Schwartzman (7) 6-2 6-1, and lucky loser Jozef Kovalik proving too good for Guido Pella 6-3 6-3

The top three seeds, Nadal, Dimitrov and Thiem, all won through to the third round, while Kei Nishikori (14) was forced to retire from his match after dropping the opening set.

Stuttgart 

In some of the final first round matches:

Wildcard CoCo Vandeweghe smashed her fellow American Sloane Stephens (7) 6-1 6-0

In form Petra Kvitova was played out of form by Angie Kerber 6-3 6-2, in a reversal of their Fed Cup result from last weekend.

Qualifier Veronika Kudermetova, ranked 193, defeated Carla Suarez Navarro 7-6(5) 6-2

The match of the day was won by Anastasia Pavlyuchenkova - she beat Madison Keys after 2 hours and 44 minutes 7-6(7) 5-7 6-4.

Top seed Simona Halep won her second round match after losing the opening set to Magdalena Rybarikova.

Budapest 

The tournament lost its second and third seeds

Qualifier Lorenzo Sonego, ranked 159, defeated Richard Gasquet (3) 6-4 7-6(4)

Lucky loser Marco Cecchinato defeated Damir Dzumhur (2) 6-3 6-1

Istanbul 

Ekaterina Makarova (5) was defeated in her opening round match by Aleksandra Krunic 1-6 6-1 6-4

Second round wins have been provided by:

Pauline Parmentier over Yulia Putintseva 6-2 2-6 6-3

Irina-Camelia Begu (7) over Christina McHale 6-4 6-4

Sveta Kuznetsova (2) over qualifier Viktoriya Tomova 7-5 4-6 6-1