Carlos Alcaraz proved why he is the five-set king of tennis as the world No 1 won a record Australian Open semi-final against Alexander Zverev to keep his career grand slam bid alive in five hours and 27 minutes.
Alcaraz looked to be cruising into his first Australian Open final without dropping a set as he led third seed Zverev after two close sets, but as he neared the finish line at 4-4 in the third, the 22-year-old dramatically pulled up, stretching his right leg.
