is a Japanese badminton player affiliated with Tonami. He won his first BWF World Tour title at the 2023 Indonesia Masters Super 100 II.

Career Obayashi made his international senior debut at the Vietnam International Challenge in 2018, and participated in his first BWF World Tour tournament, the Canada Open, later that year. He reached the finals of a senior international tournament for the first time at the Osaka International in 2019, finishing runner-up to countryman and former Saitama Sakae High School teammate Koki Watanabe. Obayashi would go on to win his first international title the following year at the Jamaica International.

Obayashi won his first BWF World Tour title at the Indonesia Masters Super 100 II in 2023. That year, he also reached the finals at the Vietnam Open and won two more International Challenge-level tournaments, including the inaugural Saipan International after winning the final against top-seeded Jeon Hyeok-jin. Obayashi later achieved notoriety for his upset victory over Anders Antonsen when making his Super 500-level debut at the 2023 Japan Masters, where he ultimately reached the semifinals before losing to world no. 1 Viktor Axelsen.

Achievements

BWF World Tour (1 title, 2 runners-up) The BWF World Tour, which was announced on 19 March 2017 and implemented in 2018, is a series of elite badminton tournaments sanctioned by the Badminton World Federation (BWF). The BWF World Tour is divided into levels of World Tour Finals, Super 1000, Super 750, Super 500, Super 300, and the BWF Tour Super 100.

Men's singles Year Tournament Level Opponent Score Result Ref2022Canada OpenSuper 100 Alex Lanier12–21, 21–12, 13–21 Runner-up 2023Vietnam OpenSuper 100 Huang Yu-kai13–21, 13–17 Runner-up 2023Indonesia MastersSuper 100 Choi Ji-hoon21–8, 21–19 Winner

BWF International Challenge/Series (4 titles, 2 runners-up) Men's singles Year Tournament Opponent Score Result Ref 2019 Osaka International Koki Watanabe 21–19, 17–21, 7–21 Runner-up 2020 Jamaica International Yushi Tanaka 21–11, 17–21, 21–12 Winner 2020 Peru Future Series Yushi Tanaka 13–21, 21–8, 18–21 Runner-up 2022 Canadian International Brian Yang 21–11, 21–17 Winner 2023 Vietnam International Lê Đức Phát 21–14, 21–15 Winner 2023 Saipan International Jeon Hyeok-jin 21–19, 21–16 Winner BWF International Challenge tournament BWF International Series tournament BWF Future Series tournament

BWF Junior International (1 title, 1 runner-up) Boys' doubles Year Tournament Partner Opponent Score Result Ref 2017 German Junior Hikaru Minegishi Mahiro Kaneko Yunosuke Kubota 15–21, 18–21 Runner-up

Mixed doubles Year Tournament Partner Opponent Score Result Ref 2017 India Junior International Natsu Saito Rinov Rivaldy Angelica Wiratama 18–21, 21–16, 21–17 Winner

BWF Junior International Grand Prix tournament

Performance timeline

National team Junior level Team events 2016 2017 Asian Junior Championships B B World Junior Championships A B

Senior level Team events 2024 Asia Team Championships B Asia Mixed Team Championships NH Asian Games NH Thomas Cup A Sudirman Cup NH -->

Individual competitions Junior level Events 2016 2017 Asian Junior Championships 3R A World Junior Championships A QF

Senior level

Tournament BWF World Tour Best Ref201820192020202120222023202420252026 India Open A NH A 2R 1RA 2R ('24) Indonesia Masters A 1RA 1R ('25) Thailand Masters A NH A QF A QF ('24) German OpenA NHA 1RA 1R ('25) Swiss Open A NH A 1R A 1R ('24) Orléans Masters A NH A QF 2R Q2 QF ('24) Thailand Open A NH A 1R 1R A 1R ('24, '25) Malaysia Masters A NH A 1R A 1R ('24) U.S. Open A NH QF 2R A QF ('23) Canada Open 3R A NH F A 2R 1R A F ('22) Japan Open A NH A 1R A 1R ('24) China Open A NH A 1R A 1R ('24) Taipei OpenA NHA 1R A 1R ('25) Korea Masters A NH A 2R QF 1R A QF ('24) China Masters A NH A 2R A 2R ('24) Indonesia Masters Super 100 A 3R NH A3R A 2R A W ('23) W 2R Vietnam Open A 2R NH A F A 2R A F ('23) Hong Kong Open A NH A2R A 2R ('24) Kaohsiung Masters N/A 3R A 3R ('23) Korea Open A NH A2R A 2R ('24) Arctic Open A NH A 1R 2R 2R ('25) Malaysia Super 100 N/A A 3R 3R ('25) Denmark Open A 2R A 2R ('24) Japan Masters N/ASF 1R 1R SF ('23) Akita Masters 1R QF NH N/A QF ('19) Spain Masters A NH A 1R NH 1R ('24) Year-end ranking 186 141 105 124 117 34 36 77 30 Tournament 2018 2019 2020 2021 2022 2023 2024 2025 2026 Best Ref

Record against selected opponents Record against Year-end Finals finalists, World Championships semi-finalists, and Olympic quarter-finalists. Accurate as of 15 May 2025.

Player Matches Win Lost Victor Lai 1 1 0 +1 Chou Tien-chen 2 0 2 –2 Anders Antonsen 3 1 2 –1 Viktor Axelsen 1 0 1 –1 Alex Lanier 3 1 2 –1 Lakshya Sen 2 0 2 –2

Player Matches Win Lost Tommy Sugiarto 1 1 0 +1 Kodai Naraoka 4 0 4 –4 Loh Kean Yew 1 0 1 –1 Kunlavut Vitidsarn 3 1 2 –1 Kantaphon Wangcharoen 3 3 0 +3

References

External links