Tadanori Yakabe is a highly seeded junior player in the All Japan Tournament, currently ranked 36th in the Kanto region. He's best known as a baseliner with a strong, flat forehand and a solid serve—nothing flashy, but reliable and varied. According to Eiichirou Maruo, his style is pretty similar to Alex's overall approach.
What sets him apart is his serve, which is genuinely quick, though not quite at Takuma's level. His shots aren't exceptional individually, but the real strength is in having options and hitting them with power. More recently, he's added serve-and-volley to his game, pairing it with his fast serve to catch opponents off-guard. It's still a developing part of his arsenal—he's relatively inexperienced at the net compared to the baseline—but you can see him working it into his matches more often.
Content compiled by AnimeList.moe from publicly available sources.