【関口周一コラボ】『セカンドサーブのコツ3選』を関口周一プロに伝授してもらいました【テニス】

[Shuichi Sekiguchi Coach (Professional)'s YouTube Channel] @shuichisekiguchitennischan9669 Collaboration Video ① (Available on Shuichi Sekiguchi Coach (Professional)'s channel!)    • 【片手バックハンド】おのけんテニスコラボ！片手バックハンドの3ポイントとは？【テニス】   [🎾Lessons/School] All-Out Tennis Academy 📍2-49-1 Asao-ku, Kawasaki City, Kanagawa Prefecture Inside Yurigaoka Family Tennis Club 👉Trial Lesson & Inquiries https://100strategies.com/contact/ 📞044-954-0225 【💪Recommended Products & Favorite Gear】 ■Tennis Protein 👉Coupon: ONOKEN611 https://wheytennisprotein.square.site ■Apparel 👉https://onehundred.paintory.com/ 【📲SNS (There may be information not in the video...)】 Instagram   / ken_chan_ramen   X (Former Twitter) https://x.com/onokentennis 【🏢Operating Company】 One Hundred Co., Ltd. Strategies https://100strategies.com 【🤝Sponsor】 Wilson https://www.wilson.co.jp/tennis/ Who is Onoken? ・Ken Onoda ・Born in Okayama City ・Turned professional after graduating from Yanagawa High School and Aoyama Gakuin University ・All Japan Championships Doubles Semifinalist ・ITF Tour Singles Semifinalist, Doubles Runner-up ・After retirement, worked as a tour coach (Yoshihito Nishioka, Makoto Ninomiya, Naomi Osaka, etc...) ・Japan Tennis Association Certified S-Class Elite Coach ・Japan Sports Association Certified Coach 3 ・Representative Director of One Hundred Strategies Co., Ltd. ・Favorite Shot... Serve and Volley 【🎵BGM】 https://bgmer.net