Roger Federer had no answer on Centre Court

But he was outplayed in his 6-3 7-6 (7/2) 6-3 defeat by Ancic, who had come through qualifying and was making his Grand Slam debut.

"I feel great, I played one of the best matches in my life," said Ancic, who had spoken to Goran only the day before for tips on how to tackle Federer.

Goran had told him to stay away from the Federer forehand and to be aggressive on his second serve.

The pair hail from the same part of Croatia and are clearly close despite the age gap.

"We are from the same town and when I was growing up and he was in Split we always hit together - even when I was 10," said Ancic.

"And in the Olympics and Davis Cup we played doubles."

Srdjan Ivanisevic watched in place of his son

Ancic even went as far as to describe Goran as something akin to a "big brother".

And in true little brother style, Ancic even has a hand-me-down from Goran in the shape of his coach Bob Brett.

In his time with Goran, Brett evidently picked up a fair amount of Croatian swear words.

And he made Ancic do press-ups every time the youngster came out with one.

But the hard graft seems to have paid off and now Ancic is hoping to emerge from Goran's shadow, insisting he is not just another Ivanisevic.

"I'm Mario - everyone will know me like that," he proclaimed.

The shocks are good news for Tim Henman and Lleyton Hewitt, who are in the same half of the draw as Johansson and Federer.

Henman and Hewitt both had routine wins in their first round matches.

The Australian top seed accounted for the awkward Jonas Bjorkman, while Henman lost just six games against French qualifier Jean-Francois Bachelot.

Henman moves on to face Australian Scott Draper in the second round, but otherwise it was another bad day for the British contingent.

Jane O'Donoghue showed fight but was soundly beaten 6-1 6-1 on her Wimbledon debut by Venus Williams.

Rachel Viollet fared even worse, winning just one game against Maggie Maleeva, while Hannah Collin and Anne Keothavong also crashed out.

Elena Baltacha was the only British woman to reach the second round, beating Maria Vento-Kabch 6-4 6-4.