British number one Johanna Konta fell to a shock second-round loss at the Australian Open as lucky loser Bernarda Pera's dream run continued in Melbourne. Pera stunned the ninth seed 6-4 7-5 in a huge upset at Melbourne Park on Thursday.

The American, 23, is making her main-draw debut at a grand slam after replacing the injured Margarita Gasparyan. Pera had been beaten by Viktorija Golubic in the final round of qualifying, but the left-handed world number 123 has taken her chance in the main draw.

She made the most of an error-filled performance by Konta, who had reached at least the quarter-finals the past two years at the Australian Open.