Katie Boulter comes up short in second-round battle against Zheng Qinwen

The British number one was beaten 6-3 6-3 in the second round at Melbourne Park.

Katie Boulter was knocked out in the second round in Melbourne (Asanka Brendon Ratnayake/AP) (AP)

Katie Boulter came out second best in a power battle with 12th seed Zheng Qinwen at the Australian Open.

British number one Boulter has had a great start to the season and she certainly played her part in an entertaining clash against Zheng, who is one of the rising stars of the game.

Ultimately she could not secure a spot in the third round, though, losing out 6-3 6-3 to the 21-year-old Chinese star in windy conditions at Melbourne Park.

Given the weather, this was a quality encounter between two of the cleanest ball strikers in the game.

It was a nip-and-tuck contest, with little to choose between them throughout, but ultimately it was Zheng who managed to come out on top in the crucial moments.

Boulter led by a break at 3-2 in the second set but Zheng responded with a run of four games in a row.

The last game was the longest of the match, with Boulter saving five match points but unable to take any of six break points before Zheng finally clinched it with an ace.