George Bush Reveals Most Nervous Moment Of Presidency: World Series Opening Pitch

George W. Bush revealed the most nervous moment of his presidency in a TIME documentary about 9/11 that aired on HBO on Sunday.

It wasn't when he learned the World Trade Center was hit or when he realized al Qaeda was behind the attack. The moment didn't even occur on September 11th, 2001.

Throwing the opening pitch in the third game of the 2001 World Series was Bush's most worried moment.

"It was the most nervous I had ever been," he said. "It was the most nervous moment of my entire presidency, it turns out."

He'd thrown out pitches before, but all eyes were on the Yankees-Diamondbacks series, which occurred just weeks after the attacks.

"The adrenaline was coursing through my veins, and the ball felt like a shotput," he said.

Yankees' shortstop Derek Jeter offered no help.

"Don't bounce it, they'll boo you," Bush remembers him saying.

Thankfully, he managed to overcome the stress.

"I took a deep breath and threw it," he said.

A truly great moment in American history.

For more of Bush's 9/11 memories, check out his interview with TIME.