Is Major Movie: Yuujou no Winning Shot hentai?
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

Movie · 2008 · 1 episodes · PG-13 - Teens 13 or older
Shounen, Sports, Team Sports
Goro briefly returns to Japan after a triumphant campaign in the US. He is heading towards Fukuoka where he played baseball when he was a fifth grader. Having just moved into a new town, this is where Goro faced a critical point in his life. (Source: ANN)
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