2026 Seoul Challenger Entry List: Marin Čilić Headlines ATP 125 Field
Former US Open champion Marin Čilić headlines the 2026 Seoul Challenger entry list as a competitive field prepares for the ATP Challenger 125 tournament in South Korea.
The EUGENE Seoul Open offers $225,000 in prize money and valuable ranking points as the 2026 season nears its conclusion.
The hard-court event begins October 26 at Seoul’s Olympic Park Tennis Courts and runs through November 1.
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2026 Seoul Challenger Entry List
The following 21 players are entered directly into the main draw. Rankings reflect the supplied entry list and are subject to change.
| Rank | Player | Country |
|---|---|---|
| 80 | Marin Čilić | CRO |
| 93 | Yunchaokete Bu | CHN |
| 99 | Térence Atmane | FRA |
| 101 | Coleman Wong | HKG |
| 109 | Sho Shimabukuro | JPN |
| 110 | Lloyd Harris | RSA |
| 113 | Yibing Wu | CHN |
| 115 | Aleksandar Vukic | AUS |
| 117 | Christopher O’Connell | AUS |
| 133 | Alexandre Müller | FRA |
| 135 | Stefanos Sakellaridis | GRE |
| 137 | Rei Sakamoto | JPN |
| 151 | Michael Mmoh | USA |
| 161 | Soonwoo Kwon | KOR |
| 166 | Zhizhen Zhang | CHN |
| 177 | Taro Daniel | JPN |
| 187 | Pavel Kotov | RUS |
| 191 | Jan Kumstat | CZE |
| 194 | Andre Ilagan | USA |
| 210 | Timofey Skatov | KAZ |
| 214 | Juncheng Shang | CHN |
Entry lists are provisional. Withdrawals, wild cards, and qualifying results may change the final field.
Marin Čilić Brings Grand Slam Pedigree to Seoul
The 2014 US Open champion and former world No. 3 arrives as the highest-ranked player on the entry list. He’s playing .500 ball this season but is inside the Top 80 and very dangerous if he gets that serve cranking.
Aleksandar Vukic Looks to Make His Mark in Seoul
Aleksandar Vukic enters the 2026 Seoul Challenger ranked No. 115, bringing plenty of ATP Tour experience and in desperate need of a big week.
He’s dropped five of his previous seven matches, and just 22-20 on the cement. Vukic is outside the Australian Open acceptance list cutoff and should be hungry enough to make a run.
Yunchaokete Bu Looks to Build on Late-Season Momentum
Yunchaokete Bu enters the 2026 Seoul Challenger ranked No. 93 and playing some of his best tennis of the season.
The 24-year-old Chinese standout has won four of his previous seven matches, including a quarterfinal appearance in Hangzhou. He also pushed Novak Djokovic to three sets in Beijing before falling 4-6, 7-6, 6-2.
Bu holds a 23-16 record on hard courts this season and has a chance to strengthen his Top 100 position ahead of the Australian Open.
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Phil Naessens has spent decades in sports as a broadcaster, author, journalist, professional tennis coach, and betting analyst. As the founder and editor of Crush & Rush News and host of the Crush & Rush Tennis Podcast, he combines firsthand coaching experience with years of sports media and publishing to deliver thoughtful tennis analysis, tournament coverage, player features, and transparent betting insights built around value, and not hype.
