1.2241120-2176969299
Roger Federer plays a forehand to Denis Kudla during their semi-final match in Halle, yesterday. Image Credit: AP

Halle, London: Defending champion Roger Federer extended his unbeaten run on grass to 20 matches by defeating American qualifier Denis Kudla 7-6(1) 7-5 in the Halle Open semi-finals on Saturday.

The pair exchanged early breaks in overcast conditions before top-seeded Federer stamped his authority by winning the tiebreak 7-1, ending Kudla’s 10-set winning streak this week.

Playing his eighth match in less than two weeks, the 36-year-old Federer seemed clearly fatigued but showed great mental strength to save five break points in the second set.

A lapse of concentration from Kudla in the 10th game allowed Federer to grab the only break point on offer before the Swiss served out the match in just under an hour and a half.

Nine-time Halle champion Federer has reached his 12th final on German grass, and will next face either Roberto Bautista Agut of Spain or Croatian Borna Coric.

Federer has won all his seven previous matches against Bautista Agut and holds a 2-0 head-to-head advantage over Coric. In London, top seed Marin Cilic ended Nick Kyrgios’s entertaining run at the Fever-Tree Queen’s Club championships with a 7-6(3) 7-6(4) as he reached the final for the fourth time.

A high-level semi-final full of thundering serves predictably boiled down to two tie-breaks in which the ice-cool Cilic proved the more composed player.

The world number six was out-aced 16-11 but never gave Australian maverick Kyrgios a sniff of a service break as he moved through to a final against 12-times Grand Slam champion Novak Djokovic or Frenchman Jeremy Chardy.

“It’s special to play here and I’ve played great tennis throughout the week and it’s great to have another shot at the title,” the 2012 Queen’s champion said on a sunny centre court.

“Nick is serving so good and it was tough to get a look on the service returns. As expected a couple of points made the difference in the tiebreaks.” Kyrgios, ranked 21, had served 82 aces on his way to the semi-final and was in scintillating form against defending champion Feliciano Lopez on Friday.

His serve was potent again and in the eighth game of the first set he bashed down three consecutives aces before playing one of his trademark ‘tweeners’ to level at 4-4.

Cilic, runner-up at Wimbledon last year to Roger Federer and this year’s Australian Open, also to Federer, was relentless though and seized on a couple of Kyrgios groundstroke errors in the opening tiebreak to pocket the first set.

Kyrgios saved the only break points of the match, recovering from 15-40 at 2-2 in the second set.

As the set sped towards another tiebreaker, the pressure was beginning to tell on Kyrgios as he yelled “I can’t focus”.