Team
An integrated performance team linking technique, mental and admissions. Multiple experts take responsibility for one athlete together.
Tennis Coaches
Tennis specialists who guide technique, physical and mental together.
Oh Seong-gook
Executive Director
Oversees elite tennis development and the design of individual growth roadmaps.
- ·Current) GCM Academy Founder & Director
- ·Former) Junior national team coach
- ·Coached 3 top-20 junior players
- ·GPTCA Level B.
- ·ATP singles career-high around 600
- ·2012 India ITF Futures — Doubles 3rd
- ·2013 Egypt ITF Futures — Doubles 3rd
- ·2013 Egypt ITF Futures — Doubles Champion
- ·2014 Gimcheon ITF Futures — Doubles Runner-up
- ·2014 Chuncheon Open — Mixed Doubles 3rd
- ·2015 KTA President's Cup — Mixed Doubles Champion
- ·2015 Anseong ITF Futures — Doubles 3rd
- ·2015 Corporate Tennis Masters — Doubles Runner-up
- ·2017 Gimcheon ITF Futures — Doubles 3rd
- ·2017 Anseong ITF Futures — Singles 3rd
- ·2017 Yeongwol Open — Singles Runner-up
- ·2017 India ITF Futures — Singles 3rd
- ·2017 Corporate Tennis Masters — Doubles Runner-up
- ·2018 Gimcheon ITF Futures — Singles Champion
- ·2018 Anseong ITF Futures — Singles 3rd
- ·2019 Daegu ITF Futures — Singles 3rd
- ·2019 Corporate League R1 — Team Runner-up
- ·2019 Corporate League R2 — Team Champion
- ·2019 Chuncheon Open — Doubles 3rd
- ·2024 Corporate League — Team 3rd
- ·2024 Corporate League — Doubles Champion
- ·97th National Sports Festival — Silver
- ·100th National Sports Festival — Silver
- ·105th National Sports Festival — Bronze
- ·107th National Sports Festival — Bronze
Yoon Jae-won
Academy Director
Oversees technical development, match operations, daily training and match coaching.
- ·Former Goyang City Hall tennis player
- ·Former Armed Forces Athletic Corps tennis player
- ·Former Dangjin City Hall tennis player
- ·Graduated as national junior No.2 singles / No.1 doubles
- ·2003-2006 National Youth Sports Festival — 4 consecutive titles
- ·2004 Kyobo Life Singles & Team No.1 — MVP Award
- ·2004 Nike World Junior national selection — No.1
- ·2004 Nike World Junior Championships — Singles 2nd (France)
- ·2005 Korea-China-Japan Championships — National team
- ·2006 U14 World Junior team event — National team
- ·2008 Korea-China-Japan Championships — National team
- ·2012 Hong Kong ITF Men's Futures — Doubles 3rd
- ·2012 Shenyang (China) ITF Men's Futures — Doubles 3rd
- ·2014 Gimcheon ITF Men's Futures — Doubles 2nd
- ·2015 Egypt ITF Men's Futures — Doubles Champion
Kim Ju-bin
Head Coach
Responsible for overall tennis development, correcting competition anxiety and designing routines during match training.
- ·Seongnam City Hall corporate team player
- ·Former J-One Tennis Academy coach
- ·2013 42nd National Youth Sports Festival — Silver
- ·2018 Yanggu ITF Junior — Doubles Semifinalist
- ·2019 Nepal ITF Junior — Singles Semifinalist
- ·2020 Korea Tennis League (Corporate) — Team 3rd
Education Coaches
3 Coaches for 1 StudentThree dedicated coaches per student, together responsible for academics, life and career.
Academic Coach
Builds the self-directed learning capacity for students to study and achieve on their own.
- +Time management, goal setting, study planning, exam prep and problem-solving strategy
- +Subject-by-subject tutoring and academic progress checks
- +College English: reading strategy, essay/research writing, note-taking and discussion skills
- +US college credit prep: class system, syllabus analysis, professor communication, GPA strategy, Academic Integrity
- +Arts-major portfolio prep: structure, work selection, storytelling and program-specific strategy
Life Coach
Develops self-management, leadership and independence for adapting to global life and whole-person growth.
- +Daily-life adaptation: transit, banking, telecom, etiquette, communication
- +Emotional and stress management, self-regulation
- +Self-directed routines (scheduling, health)
- +Cultural adaptation and global manners
- +Leadership, responsibility and collaboration
- +School and community engagement (service, projects)
- +Linked with Character Development internships
Career Coach
Helps choose a major, explore paths and design a career from each student's strengths and interests.
- +Major/aptitude assessment and strengths analysis
- +Career roadmap (4-year / transfer / career pathway)
- +Expert mentor networking (doctors, lawyers, engineers, writers, etc.)
- +Practical prep: résumé, interview and portfolio coaching
- +Internship matching
Curious which coaching fits your child?
Reach out about coaching and pathways tailored to where your athlete is now.