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Teenager Zverev makes semis

Teenager Alexander Zverev's dream week continued as the German recovered from a bad start to defeat Tobias Kamke in the quarter-finals of the Hamburg Open.

The 17-year-old had never won a tour-level match before this week but the 0-6 7-5 6-3 victory over fellow Hamburg resident Kamke made it four wins in a row and set up a clash against top-seeded Spaniard David Ferrer.

The Australian Open junior champion won a Challenger tournament earlier this month and, with his run here, should climb to around 160th in the rankings, a rise of 500 places in a month.

Zverev only won six points in the first set, and he said on atpworldtour.com: "I wasn't nervous, I just didn't expect him to play as well as he did.

"He played unbelievable. I just didn't know what to do. I think I played a really great match after the first set. Luckily I got the break at the beginning of the second and I'm happy with the way I ended it."

Zverev is the youngest player since Marin Cilic eight years ago to make the last four at an ATP Tour event and the youngest ever to reach the semi-finals of a 500 tournament.

The teenager has his work cut out if he wants to make further progress, though, with Ferrer up next, and the Spaniard sped into the last four with a comprehensive 6-0 6-2 victory over countryman Pablo Andujar.

Germany had another win to cheer after Philipp Kohlschreiber saw off Lukas Rosol 6-4 6-4 and the seventh seed will play Argentina's Leonardo Mayer, who defeated Dusan Lajovic 6-1 7-5.