The origins of the Ontario Tower Buzzers reach back to the
Rancho Cucamonga Quakes, the longtime
Single-A affiliate of the
Los Angeles Dodgers. The Rancho Cucamonga
California League franchise was relocated to the
Ontario Ranch section of
Ontario, California, to play at
ONT Field, a new 6,000-seat
ballpark, as the Ontario Tower Buzzers. The name and visual identity were publicly revealed at a launch event in Ontario Town Square in mid-September 2025. This move was one in a series of changes involving three teams. The
Inland Empire 66ers of
San Bernardino relocated to
Rancho Cucamonga to play as the Quakes in affiliation with the
Los Angeles Angels. Additionally, the
Modesto Nuts relocated to San Bernardino to continue as the 66ers in affiliation with the
Seattle Mariners. In effect, it made the move a
de facto relocation of the Nuts franchise, rather than the Quakes franchise.
Diamond Baseball Holdings owns all three teams as well as two other clubs in the eight-team California League.
Ownership and management The team is owned and operated by Diamond Baseball Holdings, which manages a portfolio of
Minor League Baseball teams across the United States. Team management announced Allan Benavides as general manager, joining the organization after a long tenure with other minor-league clubs. ==Branding and mascot==