Embarrassing Australian Open mistake - celebrates victory before it's over: 'I'm ashamed'

The American Collins, ranked eleventh in the world, ended up winning the match anyway.

But after it was settled for real, she had to answer questions about what had happened.

- I have never had to play a tiebreak in the third set in a grand slam before.

I told myself that at least I didn't "faceplant," Collins says.

See the situation when Collins celebrates the victory prematurely in the video clip at the top of the article.