Andy Murray is through to the final of the Brisbane International tennis after his opponent had to retire due to injury.

The Brit was leading Kei Nishikori 6-4, 2-0 in their semi, before the Japanese player was forced to stop after hurting his knee.

Murray will meet Bulgarian Grigor Dimitrov - who pulled off a surprise victory over 2006 Australian Open finalist Marcos Baghdatis.

The tournament is a warm-up for the 2013 Australian Open - the first Grand Slam of the year.