The 21-year-old needed two hours and 43 minutes to claim a straight-sets win in her first match since the US Open.

The former US Open champion wrapped up a 6-4, 6-3 win in just over two hours in Seoul, where she will play either top seed Daria Kasatkina or Hailey Baptiste

Great Britain's Emma Raducanu reaches the quarter-finals at the Korea Open after beating China's Yue Yuan in straight sets in Seoul.

Emma Raducanu offered an unexpected take on her controversial scheduling issues on Thursday, stressing the importance of matchplay and claiming that she has been “nursing a few niggles in the last couple months that I kept pretty quiet”.

Raducanu edged ahead following a close first set and powered ahead at the start of the second, holding off a comeback from Yuan and serving eight aces during the second set. Raducanu had battled past American Peyton Stearns in the previous round to set up the meeting with Yuan,

Emma Raducanu reached the quarter-finals of the Korea Open after beating eighth seed Yue Yuan in straight sets. The 21-year-old needed seven match points to clinch a hard-fought 6-4 6-3 victory over the eighth seed.