Top seed Maria Sharapova was bundled out of the Auckland Classic women’s tennis tournament in the quarter-finals yesterday when she was beaten in straight sets by unheralded Greta Arn.

The 31-year-old Hungarian, whose best world ranking was 81 in 2002 and is now ranked 88th, dominated the former world number one and three-time Grand Slam winner from the start to win 6-2, 7-5.

Sharapova is currently ranked 18th as she rebuilds following shoulder surgery, and had earmarked the tournament as crucial in her preparation for the Australian Open and as part of her bid to regain the world top spot.

But she was the victim of too many unforced errors, which began when she dropped her serve in the opening game. Afterwards she declined to discuss her performance with the media.

Arn, however, was ecstatic. Before the match she described playing Sharapova as “a dream come true” and afterwards said she was stunned by the outcome.

Sharapova was the biggest name she has beaten and “I don’t know what to say. I am like a little girl. My dream has come true”.

Arn broke Sharapova twice to race through the first set in 30 minutes and then after trailing 2-4 in the second set she broke twice again before holding her own serve to take the match.