Friends across the Pacific since 1963. For more than 60 years, San Mateo, California and Toyonaka, Japan have shared a sister city friendship built on sports, music and student exchange. Our all-volunteer association sends young ambassadors overseas, hosts visiting families here at home, and keeps a baseball tradition that began in 1979 going strong.

COMING SOON: 2027 Baseball Exchange in October

Every two years, a team of 11- and 12-year-olds from San Mateo plays an all-star team from Toyonaka, with the two cities taking turns as host.  Our San Mateo team travels to Toyonaka, October 2-10. 

Key dates: Nov 9 and Dec 2: Intro Zoom calls for players and parents  |  Jan 23, Jan 30 and Feb 6: Tryouts  |  Feb 7: Team announced  |  Oct 2-10, 2027: Play ball in Toyonaka!

See the full timeline and how to apply on the Baseball Exchange page.