Current Champions
Roman Reigns (WWE Raw) CM Punk (WWE SD)
Kenny Omega (AEW) Tony D'Angelo (NXT)
Bandido (ROH) Nic Nemeth (Impact) Daniel Garcia (PWG) "Thrillbilly" Silas Mason (NWA)
Kento Miyahara (AJPW) Yota Tsuji (NJPW) Tetsuya Naito (NOAH) Dominik Mysterio (AAA) Hechicero (CMLL)
Elijah Blum (wXw)
PWI Magazine
Kaiju Big Battel Mayday! May Day! Boston SOS!
| Date: Sat, May 1st 2004 | Pay Per View: no |
| Venue: Avalon Boston, Boston, Massachusetts | Promotion: Kaiju Big Battel |
| Attendance: unknown |
Matches for Mayday! May Day! Boston SOS!
| no. | match | duration | match type | title(s) | rating | ||
|---|---|---|---|---|---|---|---|
| 1 | Neo Teppen | def. | Call-Me-Kevin | ||||
| 2 | Pablo Plantain & Pedro Plantain | def. | Marutambo & The Grudyin | ||||
| 3 | Unibouzu | def. | Hell Monkey (c) | Kaiju Grand Championship (title change) | |||
| 4 | Dr. Cube | def. | Unibouzu (c) | Kaiju Grand Championship (title change) | |||