Fit-again Zverev cruises into second round at Hamburg

World No.4  Zverev damaged his knee 11 days ago at Wimbledon and it was not clear for a while whether he would play in Hamburg. 

The tournament is, however, dear to him, and it also serves as a tune-up for the Olympic tournament in Paris which starts on July 27. Zverev will be aiming for back-to-back gold medals. 

The Olympic tennis tournament takes place at Roland Garros where Zverev was a French Open finalist last month. 

Casper Ruud has suffered a shock early exit at the Nordea Open in Bastad, Sweden. Norway's world No. 9 was beaten 6-3 6-3 by Brazil's Thiago Monteiro in the second round.

Ruud later returned to the clay to partner Rafael Nadal in the doubles event, with the pair saving a match point as they won 6-4 3-6, 12-10 against Theo Arribage and Roman Safiullin to reach the semi-finals.

American Reilly Opelka pulled off the shock result of the day at the Hall of Fame Open in Newport, Rhode Island, beating top seed Adrian Mannarino 6-4 3-6 6-4 to continue his comeback after almost two years off the main tour following hip and wrist surgery.