Nick Kyrgios says best-of-five set tennis at the Australian Open will make him harder to beat as he seeks to continue his winning form.

The world No.17 posed with the Brisbane International trophy on Monday, after crushing American Ryan Harrison in straight sets to claim his first ATP title on home soil the previous night.

Having proved too good over three sets at Pat Rafter Arena, Kyrgios says he is ready to embrace the grind of a grand slam.