1993 California League season

• The Reno Silver Sox relocated to Riverside, California and were renamed to the Riverside Pilots. The club began an affiliation with the Seattle Mariners. The team moved from the North Division to the South Division.
• The Visalia Oaks are renamed to the Central Valley Rockies. The club ended their affiliation with the Minnesota Twins and began a new affiliation with the Colorado Rockies. The team moved from the South Division to the North Division.
• The San Bernardino Spirit relocated to Rancho Cucamonga, California and were renamed to the Rancho Cucamonga Quakes. The club ended their affiliation with the Seattle Mariners and began a new affiliation with the San Diego Padres.
• The Salinas Spurs relocated to San Bernardino, California and were renamed to the San Bernardino Spirit. The club moved from the North Division to the South Division.
• The Bakersfield Dodgers move from the South Division to the North Division.
• The High Desert Mavericks ended their affiliation with the San Diego Padres and began a new affiliation with the Florida Marlins.

• The High Desert Mavericks finished with the best record in the regular season for the first time in team history.
• The High Desert Mavericks defeated the Riverside Pilots in a tie-breaking game to finish with the top record in the South Division in the second half of the season.

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• The High Desert Mavericks won their second California League championship, as they defeated the Modesto A's in five games.