Name: Hajime Mizuki
School year: Three
Position: Regular, manager
Special moves: Predictions
Plays against: Fuji, Momoshiro & Kaidou
Basic information:
First impressions of Mizuki are often negative. It can't be helped since he was sort of 'evil' and selfish, over-confident and arrogant. Like Inui, he collects people's data as he observes them and looks out for their weaknesses. Then, like a boss, he orders his team mates what to do against the opponents they are facing. However, he gets annoyed if they do not do as told, or if they fail to win, and will ignore the losers as if he sees them as nothing. He did everything for the sake of St. Rudolph's victory but he might have just went a little too far. He was also responsible for Yuuta's potential arm injury, which angered Fuji enough for the first time. Fortunately, his character gets better after the match against Seigaku, and from an egoist he slowly changes into more of a joker, who is ignored full-time by the one he wishes to grab attention from most - Fuji.

Name: Fuji Yuuta (Nickname: Leftie Killer)
School year: Two
Position: Regular
Special moves: Super rising, Twist spin shot
Plays against: Ryouma, Jirou
Basic information:
Yuuta is Fuji's younger brother, who studies in a different school because he does not want to be compared to Fuji and known as only "Fuji's brother". So he trains hard in the hopes of defeating Fuji one day, but his chance slipped when Mizuki deliberately placed him in a different Singles match against Ryouma instead. Though at first he seems like he holds a grudge against his brother, he actually does not and gets along pretty good with him, though sometimes he tries to act cold. He is also one of the few left-handed players, and is infamous for being the "Leftie killer".

Name: Akazawa Yoshirou
School year: Three
Position: Captain, regular
Special moves: ---
Plays against: Ooishi & Kikumaru
Basic information:
Akazawa played doubles with Kaneda against Ooishi and Kikumaru in the prefecturals. He followed Mizuki's instructions in defeating Seigaku's pair by hitting the ball using the top part of the racket, so that the impact against the edge produces illusions of multiple balls that will distract and tire Kikumaru.

Name: Yanagisawa Shinya
School year: Three
Position: Regular
Special moves: ---
Plays against: Momoshiro & Kaidou
Basic information:
Yanagisawa played doubles with Atsuji against Momoshiro and Kaidou in the prefecturals. Funnily, he was knocked out and St. Rudolph had to forfeit the match when Momoshiro's Dunk Smash hit him right in the face. ^_^" His speech habit is to add a "~da ne!" at the end of his sentences.

Name: Kisarazu Atsuji
School year: Three
Position: Regular
Special moves: ---
Plays against: Momoshiro & Kaidou
Basic information:
Atsuji played doubles with Yanagisama against Momoshiro and Kaidou in the prefecturals.

Name: Kaneda Ichirou
School year: Two
Position: Regular
Special moves: ---
Plays against: Ooishi & Kikumaru
Basic information:
Kaneda played doubles with Akazawa against Ooishi and Kikumaru in the prefecturals. Though a junior to Akazawa, he is one with courage who awoke Akazawa from his impulsiveness.

Name: Nomura Takuya
School year: Three
Position: Regular
Special moves: ---
Plays against: ---
Basic information:
Nomura appears very little in the anime and was originally placed under the match against Tezuka, probably because Mizuki's match with Fuji was, by Mizuki's predictions, their last bet to win.