Mater Dei Monarchs
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Darren Ong

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Darren Ong


Contact Coach


2025-26 Volleyball, Girls Assistant Coach

2024-25 Volleyball, Girls Assistant Coach

2023-24 Volleyball, Girls Assistant Coach


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Richard Mercado

Contact Coach

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Mater Dei Monarchs

1202 West Edinger Avenue

Santa Ana, California 92707

(714) 850-9573

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  • Sports
  • Schedule & Results
    • Calendar
    • Sync Schedule
    • Dismissal
  • Tickets
  • Inside Athletics
    • Athletics History / At a Glance
      • At a Glance
      • Our Mascot and Colors
      • Heisman Trophy Winners
      • Celebrating 50 Years of Title IX
      • Olympians
      • Gatorade Players of the Year
    • Admin Staff
    • Coaching Staff
    • College Commitment Days
    • Corporate Sponsorships
    • Annual Golf Classic
  • Sports Medicine
    • Sports Medicine Center
    • Healthy Roster
    • Physicals 2025-2026
  • Fan Zone
  • Camps
  • Media
    • Sideline Requests
    • Press Releases
    • Name, Image, Likeness (NIL)
      • Brand Guidelines

    Fall

  • Cross Country – Coed
    Schedule Roster
  • ESports
  • Flag Football, Girls
    Schedule Roster
  • Football
    Schedule Roster
  • Golf, Girls
    Schedule Roster
  • Tennis, Girls
    Schedule Roster
  • Volleyball, Girls
    Schedule Roster
  • Water Polo, Boys
    Schedule Roster

    Winter

  • Basketball, Boys
    Schedule
  • Basketball, Girls
    Schedule Roster
  • Soccer, Boys
    Schedule
  • Soccer, Girls
    Schedule
  • Traditional Competitive Cheer
    Schedule
  • Water Polo, Girls
    Schedule
  • Wrestling, Boys
    Schedule
  • Wrestling, Girls
    Schedule

    Spring

  • Baseball
  • Beach Volleyball, Girls
  • Golf, Boys
  • Lacrosse, Boys
  • Lacrosse, Girls
  • Softball
  • Swimming & Diving, Boys
  • Swimming & Diving, Girls
  • Tennis, Boys
  • Track & Field – Coed
    Schedule
  • Volleyball, Boys

    Club Sports

  • Ice Hockey
  • Sailing
  • Surf