Kaohsiung Sets The Bar In Asia The prestigious Challenger 125 event in Kaohsiung is one of the top tournaments in Asia. Held the week before the ATP Tour's Asian Swing, players and fans are treated to a world-class experience at the Kaohsiung Arena. The tournament has boasted a strong list of champions since its inception in 2012, with Hyeon Chung going back-to-back in 2015-16, Gael Monfils in 2018 and John Millman in 2019.