Mischa Zverev has ended Tommy Haas’ headline-making run in an all-German quarterfinal at the ATP World Tour tournament in Stuttgart.
The sixth-seeded Zverev needed 67-minutes to record a 6-4 6-4 victory.
Haas, the 39-year-old veteran in his final season, had stunned Wimbledon favourite Roger Federer in the second round.
Zverev, who hit 16 aces and did not lose serve in the win, next plays Spanish veteran Feliciano Lopez.
The 35-year-old Lopez upset third seed Tomas Berdych in a two hour, eight minute quarterfinal.
Lopez fired 19 aces and saved all nine break points he faced in the 6-7(4) 6-3 6-4 win.
The second semifinal is an all-French affair, with fourth seed Lucas Pouille to meet Benoit Paire.
Pouille overcome German hope Philipp Kohlschreiber 6-4 2-6 6-3 in the quarterfinals, with Paire beating Pole Jerzy Janowicz 6-1 7-6(4).
Alexander Zverev, the younger brother of Mischa, has continued his positive bounce back from an early French Open exit to reach the semifinals at the ATP World Tour event in s-Hertogenbosch this week.
The second-seeded Zverev only needed 56 minutes to beat Frenchman Julien Benneteau in the quarterfinals, firing 13 aces in a 6-0 6-4 victory.
The world No.10 next faces Luxembourg’s Gilles Muller, a 6-3 3-6 6-4 victor over Brit Aljaz Bedene.
Look who's in the #RicohOpen semis ??
Zverev beats Benneteau 6-0 6-4 to make final four ???????? pic.twitter.com/wIjiv3iyxR
— Tennis TV (@TennisTV) June 16, 2017
An all-Croatian is set in the other semifinal, with top seed Marin Cilic to face Ivo Karlovic for a place in the final.
Cilic beat dangerous Canadian qualifier Vasek Pospisil 6-3 7-5 in the quarterfinals, while Karlovic defeated Russian Daniil Medvedev 6-4 6-4.
The Croatians, who were team-mates in last year’s Davis Cup final, have played five times previously, with Cilic leading the head-to-head advantage with three wins. This will be their first meeting on grass.
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