By Jayita Belcourt Andy Murray has again shown the world why he is the reigning Olympic Gold Medalist and US Open Champion with a stunning victory over Bulgarian youngster Grigor Dimitrov at the Brisbane International Finals today. Despite a sluggish start to the match, where Murray scored only two points in the first three games of the opening set, the ATP ranked no. 3 clawed his way back from 2-5 down in the first set and 3-4 in the second to defend his Brisbane title