Novak Djokovic's run of 33 consecutive wins at the Australian Open is "ridiculous", said Eurosport expert Laura Robson, after the world No. 1 beat Taylor Fritz to reach the semi-finals. Robson said the Serbian was "proving everyone wrong" in Melbourne after a few below-par performances so far. Djokovic will face Italy's Jannik Sinner for a place in the final on Friday.