"It was not a good sight. It was bad," Chicago third baseman Kevin Youkilis said. "I could see the guy pumping on him, doing something where I just knew it was happening too long. I said something to [umpire] Mark [Wegner] and finally I was like 'We've got to stop this thing.'"
The fan was lifted onto a cart and taken to a local hospital, where he then passed away Thursday night.
"It puts it in perspective, you know?" Youkilis said after the game. "This is a game, it's not life or death."
The unidentified man was reported to be middle-aged, and it is the second incident this season where a fan has gone into cardiac arrest at a Blue Jays game.