While making a throwing motion, Kemp mouthed to Montana: "I want a signed football."
To which Montana mouthed in reply: "I want a signed bat."
To which both smiled.
When Kemp arrived in the clubhouse Tuesday, he was greeted by a Joe Montana San Francisco 49ers jersey, with the inscription: "Enjoy watching you work. The best. Joe Montana."
"I'm so happy I want to cry," Kemp said. "I'm the biggest 49er fan. I had an uncle who took me everywhere and he was a big 49er fan. I'm the biggest Joe Montana fan."
Kemp said he will respond with a signed Dodgers jersey for Montana.