Maiami Championship

The Maiami Championship is a Dueling competition in the Yu-Gi-Oh! ARC-V anime. The event is sponsored by Leo Corporation and is managed by the "Maiami Duelist Association".

The tournament is divided into three categories: "Junior", "Junior Youth" and "Youth", based on the contestant's age. Taking part in this tournament is the first step towards becoming a Professional Duelist.

Purpose
The Maiami Championship is a cover up plan designed by Reiji Akaba. According to him, the tournament is actually an exam to select Duelists whom are strong enough to battle against his father, Leo Akaba.

Additionally according to Reiji, the upcoming Battle Royal Junior Youth finals has an alternative motive as well. That is to to stop the upcoming Fusion Dimension invasion. For that, 8 LDS top students are joining in such battle.

Requirements
To qualify for the championship, a Duelist must either have:
 * Participated in at least fifty official Duels in a year, with a win rate of at least 60%.
 * Six consecutive wins in official Duels.

Junior Division

 * Ayu Ayukawa†
 * Futoshi Harada†
 * Reira Akaba
 * Takeshi Shimizu†
 * Tatsuya Yamashiro†

Junior Youth Division

 * Aiko Sagiri†
 * Ashley†
 * Bram†
 * Carl†
 * Charles†
 * Dennis Macfield
 * Gen Ankokuji†
 * Noboru Gongenzaka
 * Halil†
 * Hikage†
 * Haruno Mihara†
 * Hiroki Takasu†
 * Hokuto Shijima†
 * Isao Kachidoki†
 * Ken Umesugi
 * Koichi Kazami†
 * Koichiro Akutsu†
 * Makoto Takeda
 * Masumi Kōtsu†
 * Michio Mokota†
 * Mieru Hōchun†
 * Mikiyo Naname†
 * Olga†
 * Ryo Tajima†
 * Shun Kurosaki
 * Shingo Sawatari†
 * Sora Shiun'in†
 * Sunmei Yanagi†
 * Teppei Tairyōbata†
 * Tsukikage
 * Yaiba Tōdō†
 * Yūya Sakaki
 * Yūzō Tanegashima†
 * Yuzu Hīragi

Youth Division

 * Yū Sakuragi

Unknown Division

 * Akira Tendo
 * Kai Kurahashi
 * Kurumi Kobayashi
 * Mai Miyata
 * Mamoru Takeda
 * Musashi Kinomoto
 * Ryouhei Sasaki
 * Shiori Nanase
 * Takeshi Aoki

† Eliminated

Tournament Format
For the start of the tournament, Duelists were required to put their tournament ID's into their Duel Disk. A computer would then match that registered Duelist to another opponent. These two Duelists would have a match and the victor would advance to the next round.

In the first round, there were 32 matches for the Junior Youth division. In the second round, there are supposed to be 16 matches for the Junior Youth Division. However, one was defaulted after Hokuto was captured by Serena.

Final 16 of the Junior Youth Division
The final 16 Duelists are engaged in a Battle Royal around Miami City using "Wonder Quartet" as the Action Field. The Duelists will also be able to find Pendulum Monsters around the city to assist them in their Duels. The Duelists must find at least two Pendulum Monsters to Duel against other opponents and wager them. Duelists participate in individual Duels, which can merge into Tag Duels. If a Duelist forcibly joins a duel, they receive a 2000 damage penalty for intrusion. The winner will take the losing opponents Pendulum Monsters and move on to the next opponent. The top 8 Duelists with the most Pendulum Monsters will move onto the next round. The Battle Royal will last for 24 hours. The Battle Royal began at midday with all Duelists leaving the stadium to Duel.

Final 8 of the Junior Youth Division
The final 8 participants of the Junior Youth Division are Ken Umesugi, Makoto Takeda, Tsukikage, Dennis Macfield, Noboru Gongenzaka, Yūya Sakaki, Shun Kurosaki, and Yuzu Hīragi. Even though they are the last 8 participants, they only qualified because of an invasion of the Standard Dimension by the Fusion Dimension that sealed the other 8 participants into cards. Sora sealed Hikage,  Yūri sealed Halil and Olga  while the Obelisk Force sealed Ashley, Carl, Bram,  Michio Mokota and Teppei Tairyōbata. No player really qualified towards the final 8 but obtained entrance because of the invasion.

Cancellation
The final 8 participants of the Junior Youth Division were Ken Umesugi, Makoto Takeda, Tsukikage, Dennis Macfield, Noboru Gongenzaka, Yūya Sakaki, Shun Kurosaki and Yuzu Hīragi. Rather than playing the Battle Royal as expected, they instead fended off an invasion of Standard Dimension by the Fusion Dimension that sealed the other 8 participants into cards. Sora sealed Hikage, Yūri sealed Halil and Olga while the Obelisk Force sealed Ashley, Carl, Bram, Michio Mokota and Teppei Tairyōbata. Ken Umesugi and Makoto Takeda Dueled Yūgo, but were defeated by him off-screen. Additionally, while Yuzu Hīragi survived, she was transported with Yūgo to the Synchro Dimension due to her bracelet and initially assumed by the other contestants to have been sealed in a card as well.

After the Battle Royal ended, Himika Akaba and Reiji Akaba officially cancelled the Maiami Championship to reveal to the public the existence of the Fusion Dimension invaders as well as the Lancers.