Roger Federer's Wimbledon preparations have suffered a major blow after he was stunned by veteran wildcard Tommy Haas in the final of the Gerry Weber Open

Roger Federer's Wimbledon preparations have suffered a major blow after he was stunned by veteran wildcard Tommy Haas in the final of the Gerry Weber Open.

The world No.3 was bidding for his sixth title in Halle and fifth tour win this season but despite breaking in the very first game, he never looked comfortable against the 87th-ranked German, going down 7-6, 6-4.

Federer hasn’t won a Grand Slam in more than two years, yet, while he failed to reach the final of the French Open, he’s been in strong form this season and would have been fancying his chances for major No.17 on his favourite grass surface.

Roger Federer's Wimbledon preparations have suffered a major blow after he was stunned by veteran wildcard Tommy Haas in the final of the Gerry Weber Open

Although, going down to Haas, who at 34 was oldest player in the draw, is hardly the type of form you want to be taking into one of the biggest events of the year.

The remarkable result, meanwhile, capped off a dream run for Haas as he wound back the clock to snap a three-year title drought and decade-long losing streak against the Swiss ace.

The home hope recovered from his early stumble by winning the first set on a tiebreaker and then getting the decisive break in the ninth game of the second to lift his second Halle trophy.