BLACKTOWN, Australia (AP) _ There are days on the sports calendar that you are supposed to dread being the opponent.

The fight after Mike Tyson gets a bill for back taxes from the IRS.

The start after Red Sox ace Pedro Martinez gets bombed.

The game after the U.S. softball team loses two in a row.

OK, scratch that last one.

Suddenly the Americans aren't so scary anymore. Awaiting a breakout game in an Olympic tournament they should have cruised through, they broke down instead for the third game in a row. Forget all the talk about a dynasty; this one has thrown a tire.

This time, it came against Australia. Trailing 1-0 in the bottom of the 13th inning and down to their last out, the Aussies got a walk-off home run by Peta Edebone for a 2-1 win.

The U.S. women craned their necks following the arc of the shot over the left-field fence, then hung their heads and walked off in stunned silence.

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