OVA series: The Nationals Arc Singles 3 of the finals: Tezuka vs Sanada. Tezuka uses Tezuka Zone, Saiki Kanpatsu no Kiwami, Hyakuren Jitoku no Kiwami and two of his new moves, Tezuka Phantom and Zero-Shiki Serve while Sanada uses his FuuRinKaInZanRai. When it's Sanada's match point, he combines three of his techniques KaRinRai (Fire, Forest, and Lightning) into one deadly attack. Sanada's KaRinRai scrapes the ground and the Zero-shiki serve was defeated. Tezuka tries to return the attack, but his racquet was blown away. Because of the generated force of the KaRinRai, the ball was popped back into the air, upon impact with Tezuka's racquet, heading to Sanada's side of the court. It was shown that Tezuka somehow added some spin to the ball, and it lands on the net. In the end, Sanada defeats Tezuka by a score of 7-5 when the ball drops from the net onto Tezuka's side.

OVA series: The Nationals Arc Doubles 2 of the finals: Inui-Kaidoh pair vs Yanagi-Kirihara pair. Inui's best data and Kaidoh's Tornado Snake are ineffective against Rikkaidai's pair. Inui seems ready to give up, but Kaidoh uses Yagyuu's Laser Beam. Kirihara transforms into a demon, purposely aiming at Inui and injuring him severely. Kaidoh turns into a demon himself, but was stopped by Inui. Soon after that, Inui collapses, Seigaku forfeits the match, and Inui is rushed to the hospital. This is the episode when they also find out that Ryoma lost his memory while he was still back in Karuizawa with his father, Echizen Nanjiroh. But while they were training for the National Finals something happened to cause Ryoma to lose all his memory about tennis.

OVA series: The Nationals Arc During the Singles 2 match between Fuji and Niou, the latter uses an illusory movement to transform into Tezuka. Aside from the appearance, he also has the ability to copy his signature techniques and playstyle. While Fuji is able to get out of the illusion, Niou creates yet another one, this time being Shiraishi the copied. It was a very close match,7-5, Fuji wins the match with his new technique, Hoshi Hanabi.

OVA series: The Nationals Arc As the Golden Pair plays against Marui and Jackal in the Doubles 1 slot, players whom Ryoma had beaten before help him to recover his memory. In the meantime, Tooyama Kintarou challenges Rikkaidai's captain, Seiichi Yukimura, to a single-balled match just to make time for Ryoma to return. But finally, the Golden Pair wins the game for Seigaku, and all hope of winning is directed to Ryoma's match.

OVA series: The Nationals Arc After Ryoma recovers his memories, he returns to the field court for his final match against Yukimura, just to find a completely crushed Kintarou, whom Ryoma had a hard time against. How far do Yukimura's abilities extend to?!

OVA series: The Nationals Arc After many hardships and suffering, Ryoma unlocks the final Muga gate, Teni Muhō No Kiwami (Pinnacle of Perfection), and defeats Yukimura with incredible moves. Seigaku wins the Nationals! In the end, we see the Freshmen Trio (now Juniors) along with Kaidoh being the new captain and Momoshiro being the new vice-captain. Tezuka plans to go to Germany to become better. Sakuno is carrying a red tennis racket and saying that cherry trees are blooming. We then see Ryoma in America about to beat another pair of tennis gangsters.