American Collins breaks through at Open

American ace Danielle Collins says her Australian Open performance shows she's not a one-hit wonder.
American ace Danielle Collins says her Australian Open performance shows she's not a one-hit wonder.

American surprise packet Danielle Collins will depart the Australian Open $920,000 richer, a whole lot wiser and certain she has convinced any remaining doubters she is no flash in the pan.

Collins, 25, arrived at Melbourne Park boasting an unprepossessing 0-5 win-loss record in the majors.

She turned that mark on its head with five straight wins - including a third-round dismissal of world No.2 Angelique Kerber - to power into the semi-finals.

Comeback queen Petra Kvitova proved a bridge too far in the semis on Thursday, the Czech winning 7-6 (7-2) 6-0 to advance to the final against Naomi Osaka.

Having grown up in the steamy heat of Florida, Collins was unhappy that the roof was closed on Rod Laver Arena with scores locked at 4-4 in the first set when the temperature reached 38 degrees and the extreme heat policy was enacted.

But she acknowledged that did not alter the result of the match, with Kvitova dominating the second set.

"No matter what the situation is, if it's really hot, they need to start the match the way it's going to finish," she said.

"I think they do that in (American) football, and I think it certainly changed a little bit of the rhythm in the match.

"But again, it is what it is, and that's the decision they made, and she played really great tennis.

"I think that should probably be the focus of the conversation."

The former collegiate star made great strides in 2018, slashing her ranking more than 130 spots to 36.

She is now projected to rocket to a career-high 23 at the conclusion of the Open.

"Maybe some people thought I was a one-hit wonder - that it was a fluke," she said.

"Clearly none of this has been a fluke.

"There are a lot of great things to build off, and I think I had a really great learning experience throughout the entire tournament, and especially today.

"So I'm really excited for my success to be recognised, and to continue playing on the biggest stage and against the biggest and best opponents in the world."

Australian Associated Press