JUSTINE HENIN

MELBOURNE, Australia (AP) — Andy Roddick made a painful quarterfinal exit at the Australian Open on Tuesday, playing with an injured shoulder for five sets before losing to Marin Cilic.

The 21-year-old Cilic, who ousted US Open champion Juan Martin del Potro in the fourth round, became the first Croatian man to reach an Australian Open semifinals with his 7-6 (4), 6-3, 3-6, 2-6, 6-3 win.

Roddick needed a medical timeout for treatment on his right shoulder after the first tiebreaker and needed more attention while losing the second set, but he rallied surprisingly to win the next two and force a fifth set.

The 27-year-old American told the trainer he hurt his shoulder late in his five-set quarterfinal win over 2007 AustralianOpen finalist Fernando Gonzalez and that, during the first set against Cilic, it was painful to serve and hit high forehands.

Former No. 1-ranked Justine Henin reached the semifinals in her Grand Slam comeback, beating Nadia Petrova, 7-6 (3), 7-5, to take out the last seeded player in her half of the draw.

Henin, unranked and playing on a wild-card entry at Melbourne Park, next will play Wimbledon semifinalist Zheng Jie, who beat Russia’s Maria Kirilenko, 6-1, 6-3, to equal her Chinese record for the best run at a major.

Henin went down a break in the second set before finding the range with her powerful groundstrokes and winning seven of the next nine games to finish off No. 19-seeded Petrova.

“I just went for it with my heart. Finally I could make it, and I’m very happy,” Henin said. “At the end I played much more aggressive tennis.

“I didn’t want to go to the tiebreaker. I wanted to close out the match.”

Now she’s two wins from emulating Clijsters’ triumphant Grand Slam comeback.

Henin ended a highly successful run in Melbourne for Petrova, who ousted two reigning major champions on her way to the quarters - Clijsters in the third round and French Open champion Svetlana Kuznetsova in the fourth.

Zheng, who was a wild-card entry when she reached the last four at Wimbledon in 2008 to become the first Chinese Grand Slam semifinalist.