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International Wrestling Grand Prix
World Heavyweight Championship
(March 1, 2021 — Present)
Won By: Date: Event: Location: Reign:
Kota Ibushi Mar 4, 2021 Anniversary Show Tokyo, Japan 31 days
After Ibushi, who was the reigning IWGP Heavyweight and IWGP Intercontinental Champion, successfully defended both titles against El Desperado at the event, they were unified into the IWGP World Heavyweight Championship, with Ibushi as the inaugural champion
Will Ospreay Apr 4, 2021 Sakura Genesis Tokyo, Japan 46 days
** Vacated Due To Injury ** May 20, 2021 -- --
Vacated due to injury.
Shingo Takagi Jun 7, 2021 Dominion Osaka, Japan 211 days
Kazuchika Okada Jan 4, 2022 Wrestle Kingdom Tokyo, Japan 159 days
Jay White Jun 12, 2022 Dominion Osaka, Japan 206 days
Kazuchika Okada [2] Jan 4, 2023 Wrestle Kingdom Tokyo, Japan 94 days
SANADA Apr 8, 2023 Sakura Genesis Tokyo, Japan 271 days
Tetsuya Naito Jan 4, 2024 Wrestle Kingdom Tokyo, Japan 99 days
Jon Moxley Apr 12, 2024 Windy City Riot Chicago, USA 79 days
Tetsuya Naito [2] Jun 30, 2024 Forbidden Door Elmont, USA 106 days
Zack Sabre Jr. Oct 14, 2024 King of Pro-Wre… Tokyo, Japan 72 days