Andy Murray through to Brisbane International final

Andy Murray has progressed through to the Brisbane International final after opponent Kei Nishikori retired through injury.

The 25-year-old had been closing in on victory in his semi-final match after he sealed the first set 6-4.

However, his passage through to the final was confirmed earlier than scheduled when his Japanese opponent pulled out with a knee injury with Murray 2-0 up in the second set.

Murray will now play Bulgaria's Grigor Dimitrov in Sunday's final.