The injury is believed to have occurred after Tatsu took a Styles Clash wrong facing AJ Styles on 11/8 at New Japan's Power Struggle iPPV.
Tatsu worked the opening night of the New Japan World Tag League tournament before announcing he was pulling out due to injury.
He noted on Twitter that he was in a lot of pain and was trying not to take sleeping pills. Tatsu also noted it was the first time he's been hospitalized since he was born.
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