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• In Star IV/Season 2 the Hayward Pipelines were the #2 seed in the San Francisco Bay League.
  • They were swept in the San Francisco Bay League Division Series by the San Gregorio Sand Crabs .
• In Star IV/Season 4 the Hayward Pipelines were the #4 seed in the San Francisco Bay League.
  • They defeated the Richmond Slicks 3-2 in the San Francisco Bay League Division Series.
  • They clinched the pennant by defeating the Sutro Tower 4-1 in the San Francisco Bay League Championship Series.
  • They became Star IV Cup champions by defeating the Pacific Grove Monarchists 4-1.
• In Star IV/Season 6 the Hayward Pipelines were the #1 seed in the San Francisco Bay League.
  • They swept the Mountain View Miners 3-0 in the San Francisco Bay League Division Series.
  • They clinched the pennant by defeating the Richmond Slicks 4-3 in the San Francisco Bay League Championship Series.
  • They swept the Aptos Investigators 4-0 to became Star IV Cup champions.