• Halle Open

Federer through to Halle semis with walkover

ESPN staff
June 13, 2014
Roger Federer played an exhibition match after Lu Yen-hsun pulled out of their quarter-final © Getty Images

Roger Federer progressed to the semi-finals of the grass-court Halle Open without playing after Lu Yen-hsun pulled out of their quarter-final with back problems on Friday.

Federer, who began his preparations for Wimbledon by defeating Portugal's Joao Sousa on Thursday, compensated by playing an exhibition against Christopher Kas, a German player who is 78th in the doubles rankings.

The seven-time Wimbledon winner next faces fourth seed Kei Nishikori, who saved the five break points he faced in a 6-1 7-6 (4) victory over American Steve Johnson.

Former champion Philipp Kohlschreiber booked his semi-final place with a hard-fought 6-4 5-7 7-6(16) victory over German compatriot Dustin Brown. Brown ousted top-ranked Rafael Nadal on Thursday.

Kohlschreiber recovered from a 2-5 deficit in the tiebreaker before claiming the win in two hours 10 minutes.

"I don't think a third set ever went so long," the 2011 tournament winner said. "Absolute war of nerves. The atmosphere was incredible but in the end you just want to leave the court as the winner."

Kohlschreiber will next face Alejandro Falla , who defeated German wild card Peter Gojowczyk 7-6(4) 7-6(2). Gojowczyk upset the third-seeded Milos Raonic in the second round.

This article originally appeared on ESPN.com

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