MELBOURNE, Jan 28 (Reuters) - A distraught Lorenzo ‌Musetti was struggling to comprehend how injury robbed him of victory against Novak Djokovic ‌and a place in the Australian Open semi-final on Wednesday.

The Italian fifth seed ‌outclassed the 24-time Grand Slam champion for two sets at Rod Laver Arena, leading 6-4 6-3 but was then struck by an upper leg injury.