Tennis Tracker: Nadal makes winning return but veteran Wawrinka knocked out

23:52 CET - It's some real late night tennis in Sicily, where top seed Qinwen Zheng (21) has progressed with a straight-set win over Sara Errani (37) 6-3, 6-2.

22:04 CET - Over to some night tennis in Palermo, where fourth seed Diane Parry (21) is through after a comeback 4-6, 6-4, 6-4 over Olivia Gadecki (22).

21:05 CET - Over in the United States, we have a grass-court competition into its second day and there have been mixed results for the seeded players with eighth seed Rinky Hijikata (23) crashing out, but it was a better contest for Arthur Rinderknech (28), who did advance.

20:28 CET - Stan Wawrinka (39) has been knocked out at the first hurdle in a home tournament for him in Gstaad by Slovakia's Lukas Klein (26) 7-6, 2-6, 7-5.

20:00 CET - Holger Rune (21), the second seed in Hamburg, has moved into the next round with a 6-4, 6-4 win over the always dangerous Fabian Marozsan (24).

17:56 CET - Rafael Nadal (38) has returned to singles action in style, beating Leo Borg (21) - son of the legendary Bjorn Borg - 6-3, 6-4 in just 86 minutes in Bastad. An encouraging display for the Spaniard. 

16:42 CET - After some encouraging signs at Wimbledon, Matteo Berrettini (28) has continued his comeback with a 6-4, 7-6 win over Pedro Cachin (29) at the Swiss Open.

15:40 CET - Seventh seed Moyuka Uchijima (22) has been forced to retire while trailing 6-1, 1-0 to Ella Seidel (19) in Budapest.

14:55 CET - In Hamburg, Arthur Fils (20) battled from a set down to defeat Jaume Munar (27) 5-7, 6-3, 6-1. 

Over in Budapest, Diana Shnaider (20) and Bernarda Pera (29) both claimed victories, while Hamad Medjedovic (20) won in Gstaad.

12:52 CET - Qualifier Quentin Halys (27) has seen off fellow Frenchman Richard Gasquet (38) 7-6, 7-6 to make his way through in Gstaad.

12:23 CET - Clay competition continues around Europe with just nine days to go until the Olympic Games, giving those players taking part a way to prepare after the grass-court swing.

For Nadia Podoroska (27), that preparation has gone badly, after she was beaten by Eva Lys (22) 6-3, 6-0. 

09:15 CET - Hello and welcome to Flashscore's coverage of today's tennis!