Late in the match, KENTA was noticeably dazed, though it's not clear what specifically caused him to be out of it. At one juncture, he wasn't aware enough to get out of a pinfall at the right moment, causing the referee to have to slow down his count.
KENTA, however, managed to collect himself enough to finish the match with his Go to Sleep, ending Ishii's fifth reign with the belt at 83 days.
It came out later that KENTA was hospitalized following the event, but fortunately he seems to be okay. The new champion tweeted about the situation, writing, "This is the best way to start as NEVER CHAMP in the hospital. I’m totally fine. Thank you for booing me London."