According to her family, Ollman has never missed a Brewers game.
"Unless someone invites me to a party," Ollman told WISN. "Then I'll miss the game."
When she cannot watch the game because of another commitment, Ollman tapes it, the television station reported.
Ollman, called “Nana” by her family, said her son told her Thursday about her special appearance at Miller Field.
"He hands me a baseball and says, 'You're throwing out the first pitch,'" Ollman told WISN. "I'm like, 'What are you talking about?'"
It was no joke. Friday night, after being presented with a Brewers jersey with No. 100 and “Nana” emblazoned on it, Ollman rose from her wheelchair and delivered a left-handed pitch off the mound.
Before the game, reigning National League MVP Christian Yelich came by to wish her a happy birthday, WITI reported.
“It absolutely blew my mind. I still can’t believe it. I have to keep pinching it,” Ollman told the television station.
The Brewers (8-2), who lead the National League Central Division, capped Ollman’s memorable night with a 13-10 victory against the Cubs.