AUCKLAND, (Agencies) - Maria Sharapova hit the first speed bump in her injury comeback Thursday, losing 6-2, 7-5 to Hungarian veteran Greta Arn in the ASB Classic quarterfinals. The Russian, a three-time Grand Slam champion, struggled at times in her first tournament since October's China Open and finally met a player in Arn, 31 years old and unseeded, who could make her pay for her mistakes. "I'm like a little girl whose dream has come true," Arn said. Sharapova's serve was shaky in three matches this week-the former world No 1 particularly struggled with her ball toss in windy conditions-and showed a lack of patience and accuracy in rallies against Hungarian veteran Greta Arn.