Iga Swiatek survives scare against Danielle Collins to reach third round

Iga Swiatek roars after beating Danielle Collins (Andy Wong/AP)

An emotional Iga Swiatek survived a major scare to defeat Danielle Collins and reach the third round of the Australian Open.

The world number one lost to Collins in the semi-finals in Melbourne two years ago and it appeared history was about to repeat itself when the American took a 4-1 lead in the deciding set under the roof on Rod Laver Arena.