List of the 66 teams (rough English translation). Due to increase number of teams participating in this event, they added a Wildcard stage to the day's event. If anyone is up and watching, I will be posting on twitter with the hashtag #PreBTCup (if I don't fall asleep).

Akira Teams
Team 07: Gachimuchi Hachi Kyokuken [Jabauokku (AK)/ Manmai (AK)/ Chinoppi (AK)/ Nibuichi (AK)/ Morio (AK)]

Team 15: Kaze Nogotoku [Kan (AK)/ Sakontera (AK)/ Himaru (AK)/ Uji no Zan Ani (AK)/ Coke (AK)]

Team 16: Hachimon Extreme Spirit [Homestay Akira (AK)/Joseph (AK)/Kamaage (AK)/Moo Moo Dance (AK)/Tane (AK)]

Aoi Teams
Team 04: Roppongi Shinchuuduki [Malcolm X (AO)/ Ke~Aoi-san (AO)/ Yuucha (AO)/ Y-F-W (AO)/ Chiba Sanako (AO)]

Team 63: Tokyo Aoi Surii [Non (AO)/ Kobajirou (AO)/ Ekimae (AO)/ Kashiwage Yuki (AO)/ Kofu Megane (AO)]

Team 64: Uriwari Ryuu Aikido Ba [Uriwari Aoi (AO)/ Marasuke Mosumosu (AO)/ Sarayoru (AO)/ Hori (AO)/ Hagakure Ryuu Aoi (AO)]

Blaze Teams
Team 17: Rude [Shironuko (BL)/ Arai Kuma Rasukaru (BL)/ Kiisu (BL)/ Ohsu (BL)/ Ginyuu (BL)]

Team 18: Twilight Burantsu [Ryoutei Sarapoa (BL)/ Dora Blaze (BL)/ Satoimo (BL)/ Mokomoko Hoshibito (BL)/ Runsa (BL)]

Brad Teams
Team 30: Souku Club [Donpatchi (BR)/ Hitsuji (BR)/ Super Zeus (BR)/ Chai (BR)/ Ichirouta (BR)]

Team 33: Rajadamunanjimu [Raki(BR)/Chinobrad (BR)/Zen (BR)/Gigusu (BR)/Itoshun (BR)]

Team 59: Ketsuen [Junia (BR)/ Doreiku (BR)/ Janbo (BR)/ Uranaha (BR)/ Yamapan (BR)]

Eileen Teams
Team 12: Saru Onna Kousai [Kiona (EI)/Kentarou (EI)/Shishamo (EI)/Chibi Jou(?) (EI)/Deechi (EI)]

Team 57: Saru Shinryoku [Iichiko (EI)/ Umecchi (EI)/ Enbi~ (EI)/ Koyuki (EI)/ Maichi (EI)]

Goh Teams
Team 50: Gouriki Saiga [Jaga (GO)/ Yoshino (GO)/ Kotori (GO)/ Tsudanuma Jacky (GO)/ Gorgeous Eileen (GO)]

Team 51: Boku no Kangaeta Sai Kyou Nochii Mu [Midi (GO)/ Shimuso (GO)/ Tsuyoshi Kichijouji (GO)/ Motokichi (GO)/ Kajikifaito (GO)]

Jacky Teams
Team 23: Yotsuo Bou [Norifu (JA)/ Taka Jacky (JA)/ Ryouta (JA)/ Shirasu (JA)/ Yowasuma (JA)]

Team 39: Saisoku Jeet Kune Do [ChinpanJ (JA)/ Orochipoppo (JA)/ Pidaaman (JA)/ Yatsuki (JA)/ Anaguma (JA)]

Team 42: Onigoroshi [Koarashi Monichirou (JA)/ Koarashi Monjirou (JA)/ Napoleon (JA)/ Jada (JA)/ Dabi (JA)]

Team 43: Onahama Date Club [Nisuteru (JA)/ Chige (JA)/ Kagetsu (JA)/ Hiragana de Aoki (JA)/ Hoshi no Hikaru (JA)]

Jean Teams
Team 35: Shinshinkai [Koedo (JN)/ Puuta (JN)/ Chootarou (JN)/ Tara (JN)/ Haga Jean ? (JN)]

Team 45: Temodemo no Seiken [Momokuro Mameta (JN)/ Hetappi Kujou (JN)/ Hiiro (JN)/ Hibiki (JN)/ (・ω・R).f (JN)]

Jeffry Teams
Team 14: McWild Daroo [Yodoriba Jacky (JE)/Super J Sabaibu (JE)/Serufuman (JE)/ Tonari the Totoron (JE)/ Manshi(JE)]

Team 46: Jeffry Team [Magnum (JE)/ Chibitarou (JE)/ Katsuo Sappurimen (JE)/ Satoyan (JE)/ Yoroshiko (JE)]

Kage Teams
Team 40: Gen’ei Ryodan [Kyasao (KA)/Kuuchou (KA)/Jin (KA)/Yogo (KA)/Gadarukanaru (KA)]

Team 55: Dosukoi Kissa Arusotoromeria [Mirakureesu (KA)/ Manatsu no yorunoyume (A Midsummer Night’s Dream (KA)/ Iitomo (KA)/ Serori (KA)/ Kuma (KA)]

Lau Teams
Team 05: Zoku Chuuka Niban [Bubbles (LA)/ Urau (LA)/ Nihon Chian Bouei-Tai (Japan Defense Force Security) (LA)/ Gorugonzoura (LA)/ Matsudaira Kiyoyasu (LA)]

Team 19: Sayona Lau [Honruru (LA)/ Chanba Lau (LA)/ Kon (LA)/ Echigo no Abarenbou (LA)/ Uraohsu (LA)]

Team 36: Goko Shougun [Tonchan (LA)/ Jinzouningen (LA)/ Wasakon (LA)/ Punch za Senpuu (LA)/ Yuutenji Ra Hane (LA)]

Lei Teams
Team 06: Kamata Crew [Kazubou-san (LE)/ Makoto (LE)/ Tarami (LE)/ Kubinashi (Headless) Rider (LE)/ Ruushii Ryuu (LE)]

Team 38: Futsu no Tsuramo Sando [Barbari-kun (LE)/ Chabouzou (LE)/ Zonrenon (LE)/ Hanahi Lei (LE)/ Hagehage (LE)]

Lion Teams
Team 65: Mantis Kingdom [Chibita (LI)/ Tomarion (LI)/ Suguru (LI)/ Rafa (LI)/ Buster (LI)]

Pai Teams
Team 13: Oppai Ga Ippai [Josephine (PA)/ Shiwa (PA)/ Aopai (PA)/ Tsuchikumo (PA)/ KING (PA)]

Team 62: Kiiroi Nanika de Futtoba Su [Itazura (PA)/ Kenta (PA)/ Neo Pai (PA)/ Nanahoshi (PA)/ Eetoko no Bonbon (PA)]

Sarah Teams
Team 24: Do Flamingo [Itsuro (SA)/ Fineplay (SA)/ Puyo (SA)/ Memekurage (SA)/ YOU (SA)]

Team 31: Switch Kickers [Hi±Poω (SA)/ Ferunandio (SA)/ Amaterasu (SA)/ K-2 (SA)/ Kento-sama (SA)]

Team 34: Tokyo’s Serpents [Melissa (SA)/ Kira Yoshikage (SA)/ Pegii Rii Sara (SA)/ Woo-san (SA)/ Itahachi (SA)]

Shun Teams
Team 22: Shun Goku Satsu [Keisuta (SH)/ Buruha (SH)/ Gonatsuyo (SH)/ Kissa (SH)/ Tsusan (23) (SH)]

Team 66: YAWA Gundan [Mikki~ (SH)/ Zaku Taichou (SH)/ Tonberikun (SH)/ Pesuten YAWA (SH)/ Masatosama (SH)]

Taka Teams
Team 03: Tuspparioozumou [Usugi no Oniisan (TA)/ Kuritarou (TA)/ Harisu Urushibara (TA)/ Tonpuu (TA)/ Bokomichi (TA)]

Team 29: Kami Sumo [Mukku (TA)/ Kozou (TA)/ Gama Bunta Oyabun (TA)/ Samuburi (TA)/ Jishaku (TA)]

Team 32: Gachi Sumo [Kurita (TA)/ Yashi (TA)/ Yoko Arashi (TA)/ Kashin (TA)/ Shounen (TA)]

Vanessa Teams
Team 28: Dimooruto Vane [Shark (VA)/Kaibutsu (VA)/Dabussa (VA)/Tokyo Banana (VA)/Morimoto Reotaado (VA)]

Team 52: Vanessa Gakuen (School) [Pekora (VA)/ Seiyou (VA)/ Jisaku Mania @ Binbin (VA)/ Hamaten (VA)/ Karutika (VA)]

Wolf Teams
Team 26: Champion Carnival [Ishii Puro (WO)/ Mabou (WO)/ Gemu (WO)/ Mon-chan (WO)/ Chemuru (WO)]

Team 37: Wolf 130 Force [Machida-kun (WO)/ Kerauzuranbura (WO)/ Howaito (White) Wolf (WO)/ Zerberus (WO)/ Kagurazaka Wolf (WO)]

Team 44: Hawkfield 2012 [Hideo (WO)/Demae (WO)/Kumichou (WO)/Debiburu (WO)/Kanzen Nitaku (WO)]

Team 49: A~Ku with Good Looking Men [P-rimu (WO)/ Ken (WO)/ Paz (WO)/ Sasaduka Osu (WO)/ Aaku (WO)]

Mixed Character Teams
Team 01: Rakujitsu [Ryo Ai (EI)/ Doujima-sama (LE)/ Auru (AO)/ Omorashi (BR)/ Senningiri(KA)]

Team 02: Banmeshi wa Niigata de [Makoto (AK)/ Toyopon (EI)/ Yocchi (WO)/ Aniaki (AK)/ Zankichi (WO)]

Team 09: Kawasaki [Momo (KA)/ Aki (LE)/ Oka Dan’na (GO)/ Yuuji (TA)/ Kisukemikaru (JE)]

Team 10: Abare-ba Bokujou [Imaru (LA)/ Shenron (GO)/ Satoshi (SA)/ Nyannyan (LI)/ Abare-ba (LA)]

Team 11: Taki Produce 4 ~ Debut, GOu [Gou (KA)/ Hosaka (JA)/ Ryuu | Eileen | Mirai (EI)/ Kurafuto (BR)/ Shinbashi-gumi no Taki (LA)]

Team 20: Fantasista-Drive [Mira~ju (SA)/ Amano-jaku (PA)/ Bakudan Akira (AK)/ Supergun Knee-san (JE)/ Nori438 (SA)]

Team 21: Kichijoji Virtua Ojisan Zu [Basu (JE)/ Ba (LA)/ Kaizaa Soze (KA)/ Marizo~ (TA)/ Kazu (LE)]

Team 27: Chari de Kita [Kuro Bonjuurru(PA)/ Earo (PA)/ Shimaichi (PA)/ Nikutai no Akuma (AK)/ Sakaeda (AK)]

Team 25: Zuumii de Chaabaa [Ganmen Doshakuzure (KA)/ Chouko Akuma Ageha (SH)/ Kominamu (KA)/ Tamo3 (GO)/ Vorugu (JA)]

Team 41: Guppy [Chinjuu-ou (AK)/ Neru (LA)/ Tokio (LI)/ Migimagari (KA)/ Manpei (KA)]

Team 47: Taira Omaega NO.1 [Taira (LA)/ Sasa Panda (KA)/ Yuu (JA)/ Chicchi (AO)/ Himashin (AO)]

Team 53: Tsuchinoko Production [Tsuchinoko Puro (EI)/ Irori (TA)/ Iccha (LA)/ Aguo (LI)/ Midori-san (JN)]

Team 54: Ikarikuruu Retro Dai Corner[Mukki Akira (AK)/ Gamecenter Arashi (JA)/ Yanaga Sarah (BL)/ Mask Do Hijitetsu (JA)/ Samu (LI)]

Team 56: Yarou Inu [(WO)/ Rock (AK)/ Nidaime Ekodaaman (JN)/ Kokuoo Goh (GO)/ Dragon (WO)]

Team 58: Matsu Tereba Hiji Kaku [Maaku-ya(SA)/ Puruuto (VA)/ Kohaku (JA)/ Googyan (GO)/ Hanagata Mitsuru (JA)]

Team 60: Twitter Senbatsu [Kabu (LA)/ Ginji (JN)/ Maroon (JA)/ Futaba An (SA)/ Misakichi (SA)]

Team 61: Dokidokikyafedoru Hachiouji Ten [Densuke (JA)/ Mushouku (LI)/ Nigohachi (PA)/ Kobouzu (LI)/ Osu! Maguro-chan (KA)]

Lady Teams
Team 08: Merry Girl [Chopapi (BL)/ Raionmaru (EI)/ Himeriin (EI)/ Masuda (AO)/ Erufaba (SH)]

Team 48: Chou Karuga Mo Butai [Sarasa (PA)/HonJ (EI)/Sutefan (PA)/Hana (VA)/Panda Sara (SA)]

Schedule of Events for Pre Beat-Tribe Cup in JST:

Preliminary League - 22 Blocks (6 Seeded Blocks and 16 Standard Blocks) with 3 Teams per Block, Round Robin Format 5on5.
11:00-14:00 (Early Portion - Blocks 1-11)
14:00-17:00 (Late Portion - Blocks 12-22)
6 teams finishing 1st Place in the Seeded Blocks directly goes to the Final Tournament Stage. 16 teams finishing 1st Place in the Standard Blocks goes to the Playoff Stage. 22 teams finishing 2nd Place goes to the Wildcard Stage. 22 Teams finishing 3rd place are eliminated.

Wildcard - A single player will represent their team in the Wildcards Stage. The 22 players will be divided into 4 Single Elimination tournaments with 5-6 players in each bracket.
17:00-18:00
4 Teams will advance to the Playoff Stage. 18 Teams will be eliminated.

Playoff
Each Playoff Team will be paired off to another Playoff Team for a 5on5 Match.
18:00-19:00
10 Teams will advance to the Final Tournament Stage. 10 Teams will be eliminated.

Final Tournament
16 Teams participate in 5on5 Single Elimination Tournament.
19:00-22:00

First post updated with the links that is also provided below. For those that watched it live, you will notice that the archive is missing some of the event that was streamed (mostly the second half of the preliminary league).

Prelim - Part 1 / Prelim - Part 2 / Wildcard and Playoff / Final Tournament

Quick results are provided in the spoiler. There are many great matches in the stream. I recommend at least watching the Final Team Match of the event (Final Tournament video at ~2 hour mark) as it was very entertaining.

That would be the final team match

Yeah, all the matches from the second half of the preliminary league were unfortunately not saved . I am glad I stay up to watch everything!

Still, there are a lot of good matches available to watch. For the most part, I think the entire wild card, playoff, and final tournament stage archive remains mostly intact.