Emma Raducanu retires with hip injury in longest match of WTA season
The reigning US Open champion, Emma Raducanu, retired in the final set of a marathon first competitive outing since bowing out at the Australian Open
Australia's Daria Sewell leads 5-7, 7-6 (4), 4-3 in longest match
The 19-year-old British was playing her first match in the second round of the Australian Open after a traumatic last month.
Serving for the match at 7-5, 5-3, Raducanu failed to finish the game
Saville returned to force a tiebreak and then equalized
Saville was struggling with leg pain
Raducanu went off the court for a medical timeout
Raducanu received a heavy tap on the upper part of his left leg and came back and, after two more games, decided to retire.
The world No 12 will stay in Mexico for the Abierto GNP Seguros in Monterrey, which starts on 28 February
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