Melbourne Park, 9 December 2011 | tennis.com.au

Girls’ top seed Ebony Panoho was upset in the Optus 16s Australian Championships quarterfinals, but the news was better for boys’ top seed Li Tu.

Panoho started well in her match against Victorian Eliza Long, taking the opening set 6-3. But the dropped set only seemed to spur Long on who came out firing in the second set, taking it 6-2 before sealing her spot in the final four by taking the third set 6-1.

Third seed Brooke Rischbieth was also on the wrong end of the scoreline in her quarterfinal against unseeded Victorian Brigette Beck, who saluted 6-2 6-4. But the news was better for second seed Astra Sharma who outclassed Alexandra Osborne in straight sets, 6-3 6-2.

Danielle Wagland grabbed the last spot in the final four with a tough 6-3 1-6 [10-7] win over Stephanie Yamada.

In the boys’ event, Tu had a battle on his hands in the opening set against Ryan Frawley. The two slugged it out toe to toe, before Tu grabbed the advantage in the tiebreak, taking it 7-6(5). Contrasting the first set, the second belonged to Tu who skipped away to a 6-0 win.Other boys’ quarterfinal winners included Matthew Tanza, second seed Jay Andrijic and George Wall.

The semifinals will begin tomorrow at Melbourne Park at 9:00 am, entry is free.

> View the Optus 16s Australian Championships order of play for Saturday 10 December