SEOUL, South Korea - Agnieszka Radwanska has progressed to the second round of the Keb Hana Bank Korea Open thanks to a 6-4, 7-5 victory over Bethanie Mattek-Sands.

The pair were all square at 4-4 in the opening set, which was an entertaining affair, but it was at that point the WTA World No.60 made her move. After holding her own serve, she pounced on a second serve from the American to crush a winner down the line and claim the opener.

Mattek-Sands had the advantage in a second set that saw the momentum switch from one player to another. Indeed, she served to take the match to a decider, but Radwanska produced one of the shots of the day with a deft drop to break.

With the momentum well and truly in her favor, she continued to push and broke to claim the match when her opponent fired wide with a backhand.

Elsewhere, No.5 seed Alison Van Uytvanck suffered a defeat at the hands of the in-form Ajla Tomljanovic, who came back from losing the opener to secure a 3-6, 7-5, 7-5 success over the Belgian.

There was better luck for the No.6 seed, Hsieh Su-Wei, though she certainly had a scare after losing the opening set to Jil Teichmann. Indeed, the match went all the way to a third-set tiebreak, where the Chinese Taipei player ran away with matters to secure a 2-6, 6-1, 7-6(0) success.

Priscilla Hon and Dalila Jakupovic also bounced back from losing the opening set of their matches before recovering to break Jang Su-Jeong and Han Na-Lae respectively.

No.7 seed Irina-Camelia Begu defeated qualifier Mona Barthel, 7-5, 6-4, while Ekaterina Alexandrova shocked Johanna Larsson, 6-1, 6-2. 

Mandy Minella, meanwhile, won through against Magdelena Rybarikova, who was forced to retire in the second set.