Roger Federer through to last four in Halle

ByPA Sport

Published 23/06/2017 at 16:49 GMT

Roger Federer remains on course for a ninth title at the Gerry Weber Open in Halle after defeating Florian Mayer in the quarter-finals.

Roger Federer, pictured, will play Karen Khachanov in the semi-finals in Halle (AP)

Image credit: PA Sport

The 35-year-old has found his feet on grass at the most successful tournament of his career after his shock early loss to Tommy Haas in Stuttgart.

He needed just an hour and six minutes to see off German Mayer 6-3 6-4, serving 11 aces and taking two of his 12 break points.

In the semi-finals, Federer will face Karen Khachanov, who won the battle of the young Russians against Andrey Rublev 7-6 (10/8) 4-6 6-3.

France's Richard Gasquet is also through to the last four after a 6-1 3-6 6-1 victory over Robin Haase.

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