They helped players serve up sweet treats at the Oakland Coliseum.
Proceeds go to the team's community fund.
Sugar-free root beer and ice cream will be available.
Root Beer Float Day has raised more than $486,000 since it started in 2003.
ABC7 News Meteorologist Mike Nicco and Weather Anchor Spencer Christian attended the fundraiser and lent a helping hand.
I'm among giants! Why is their line longer than ours?? #Athletics #RootBeerFloatDay pic.twitter.com/OFOgcLAs5q
— Mike Nicco (@MikeNiccoABC7) July 19, 2017
#AtTheColiseum pic.twitter.com/BHYvGckPe9
— Mike Nicco (@MikeNiccoABC7) July 19, 2017
Click here if you'd like to make a donation to the Oakand A's Community Fund and click here to read more stories about the Oakland Athletics.