Raducanu leading 6-1, 3-0 before opponent withdrawsBrit reaches fourth round in Miami for first timeEmma Raducanu produced another brilliant performance to reach the fourth round of the Miami Open for the first time in her career after her opponent McCartney Kessler of the US retired with a back inj ury while Raducanu led 6-1, 3-0.Two days after registering one of the most impressive wins of her career, a dramatic three-set tussle versus the world No 8 Emma Navarro, Raducanu returned to the court radiating confidence and she performed at an excellent level until the end of the match. By reaching the round of 16 in Miami, Raducanu has equalled her best result at a WTA 1000 event. Continue reading... ...read more read less