Emma Raducanu retires in the final set of Guadalajara Open first round

Reigning US Open champion Emma Raducanu was forced to retire with a hip injury in the final set of a marathon first competitive outing since bowing out at the Australian Open.

The No 1 seed was forced to quit after three hours and 36 minutes in the first round of the Guadalajara Open, with Australia’s world No 610 Daria Saville progressing 5-7, 7-6 (4), 4-3 from the longest match of the WTA season.

Raducanu, who has lost two out of three matches this season, claimed the opening set after a tough 80 minutes by bouncing back from an early break to herself break Saville in the final game.

The Briton served for the match at 5-3 in the second but Saville broke back to force a tie-break which she played cleanly to claim the set.

Both women appeared to be playing through the pain in the…