【エースが取れない…】なぜサービスエースが取りづらくなったのか？ATPが仕掛けた現代テニス界の策略を紐解く

▼Join here! →   / @putekai_91   [Music provided by Hikari Surprise Inc.] [To all copyright holders] This channel creates content based on video material. We use game footage and other materials to provide easy-to-understand explanations for Japanese viewers. We respect and appreciate the channel operators whose content we use. However, if there are any shortcomings, we will remove the video. If you are a copyright holder, please contact us at the email address below. Email address: [email protected] [To copyright holders] This channel creates content based on video materials. I am working on my activities with respect and gratitude to the channel operators who are quoting the video of the game etc., and explaining it in an easy-to-understand manner for Japanese people. However, if there are any issues, we will withdraw the video, so please contact the copyright owner at the email address below. Email address: [email protected] #tennis #serve #big server