BANGKOK (FIBA U19 World Championship for Women) - Canada caused the biggest upset of the Championship beating Australia's U19 Gems 50-49 in the quarterfinals on Friday.

The win, while booking the Canadians' maiden entry into the semifinals, also handed out Australia their first defeat in seven games.

"I don't know what to say," Canada coach Rich Chambers said.

Canada await the winners of the France-USA quarterfinal.

Elizabeth Cambage led the scoring for the game with 26 points, but for the first time in the competition the 203-cm centre's performance could not help Australia win.

No other Australian player scored in double-digits.

Natalie Achonwa was the leader of the Canadian cause with 16 points, and six rebounds.

Canada showed enough signs of things to come when they scored the fist six points of the game and went 10-5 ahead in the first five minutes.

Kayla Alexander scored six points (out of 16 for the game) and pulled down three rebounds and effected a block on Cambage to lead Canada from the front.

Australia seemed to find their bearings in the second quarter, when Stephanie Cumming combined her best for the game with Cambage and the Gems remained in the reckoning.

Only till Jennifer Vaughan's sizzling three-pointer put Canada back in lead and they never trailed again.

Chambers praised his defense for the win.

"I think Natalie and Kalya were fantastic in defense. We just played behind her (Cambage) and upset the rhythm," Chambers said.

"Well two days ago, we made the quarterfinals for the first time. And today, we entered the semifinals for the first time again. So you never know," Chambers said with a wink, looking ahead.

FIBA