This amazing viral tweet called attention to an insane “This day in Indians history” graphic that was shown on TV on Thursday.

It’s about former Indians pitcher Ray Caldwell. As it says in the screengrab, during a game on Aug. 24, 1919, he was struck by lightning. However, the lightning isn’t even the craziest part. The craziest part is that after it happened, he still got back up and finished the game.

The Society for American Baseball Research has a lengthier story full of details about that day up that you can check out. Their story also includes input from various lightning experts.

Here’s one particularly crazy part of SABR’s article:

After the game, Caldwell told the Cleveland Press that the lightning strike “felt just like somebody came up with a board and hit me on top of the head and knocked me down.” He assessed the damage and found that he had slight burns on his chest. Speculation was that lightning had hit the metal button on his cap, “surged through his body, and exited through his metal spikes.”

#OTD in 1919 Ray Caldwell is struck by lightning but recovers to finish a complete game. Read more: https://t.co/WIQETCeOdS pic.twitter.com/wUSwmWStx1 — SABR Games Project (@SABRGames) August 24, 2017

Caldwell died in 1967 at the age of 79.