By SABC Sport
15th October 2023
She beat China's Yuan Yue in straight sets, 6-2 6-3, to become the first American since Venus Williams in 2007 to win in Seoul.
The victory follows her lifting the title in Montreal over the summer.
Speaking after her victory, Pegula said: 'My mom is Korean and she was adopted from here so it's really special to be able to win here.
'In the last few years, as my ranking has gone up, I've definitely felt so much more support from the fans, a lot more than I expected coming back here from five years ago. So it's really special.
Pegula was seeded number one for the tournament after accepting a wild card and only dropped one set throughout the competition during her quarter-final against Claire Liu.
Yuan started well to take a 2-1 lead in the opening set but Pegula took control, returning well on the second serve before establishing a 3-0 lead in the second set to win the final.