Watson beaten by Kostyuk at Korea Open

Heather Watson is retired of nan Korea Open pursuing a straight-sets conclusion by Ukraine's Marta Kostyuk successful Seoul.

The 32-year-old qualifier, classed 183rd successful nan world, mislaid 6-2 6-2 successful nan 2nd round.

World number 18 Kostyuk, 22, will meet Russian Diana Shnaider, 20, successful nan quarter-finals aft sealing a straightforward victory.

British number 2 Emma Raducanu earned a hard-fought win against American Peyton Stearns connected Tuesday and will play China's Yue Yuan for a spot successful nan past eight.

Watson, who past period grounded to suffice for nan US unfastened main draw, responded instantly aft losing service successful her opening crippled - but Kostyuk won 5 of nan adjacent six games to return nan opening set.

The Briton, whose opening triumph complete China's Jia-Jing Lu was only her 3rd main tie triumph this season, could not equine a fightback arsenic Kostyuk raced to triumph pinch a double break successful nan 2nd set.