Template:SeasonBySeason StarIICup HP

In Star II/Season 1 the Hayward Pipelines were the #4 seed in the San Francisco Bay League.
- They defeated the Sutro Tower 3-2 in the San Francisco Bay League Division Series.
- They clinched the pennant by defeating the Berkeley Brutalists 4-3 in the San Francisco Bay League Championship Series.
- They became Star II Cup champions by defeating the Carmel Yacht Club 4-2.
In Star II/Season 2 the Hayward Pipelines were the #2 seed in the San Francisco Bay League.
- They defeated the Oakland Bees 3-1 in the San Francisco Bay League Division Series.
- They lost the San Francisco Bay League Championship Series to the San Gregorio Sand Crabs 1-4.
In Star II/Season 3 the Hayward Pipelines were the #3 seed in the San Francisco Bay League.
- They lost the San Francisco Bay League Division Series to the Sausalito Bouncy Castles 2-3.
In Star II/Season 5 the Hayward Pipelines were the #4 seed in the San Francisco Bay League.
- They were swept in the San Francisco Bay League Division Series by the Berkeley Brutalists .
In Star II/Season 6 the Hayward Pipelines did not reach the postseason.
- They finished in last place in the San Francisco Bay League.
In Star II/Season 10 the Hayward Pipelines were the #1 seed in the San Francisco Bay League.
- They were swept in the San Francisco Bay League Division Series by the Vallejo Barnstormers .
In Star II/Season 12 the Hayward Pipelines were the #1 seed in the San Francisco Bay League.
- They defeated the Richmond Slicks 3-1 in the San Francisco Bay League Division Series.
- They lost the San Francisco Bay League Championship Series to the Sausalito Bouncy Castles 2-4.
In Star II/Season 14 the Hayward Pipelines were the #1 seed in the San Francisco Bay League.
- They defeated the Sutro Tower 3-1 in the San Francisco Bay League Division Series.
- They clinched the pennant by defeating the Oakland Bees 4-2 in the San Francisco Bay League Championship Series.
- They were swept in the Star II Cup Series by the Aptos Investigators .
In Star II/Season 15 the Hayward Pipelines were the #2 seed in the San Francisco Bay League.
- They defeated the Mountain View Miners 3-1 in the San Francisco Bay League Division Series.
- They clinched the pennant by defeating the Sausalito Bouncy Castles 4-2 in the San Francisco Bay League Championship Series.
- They became Star II Cup champions by defeating the Pacific Grove Monarchists 4-2.
In Star II/Season 16 the Hayward Pipelines were the #1 seed in the San Francisco Bay League.
- They lost the San Francisco Bay League Division Series to the Oakland Bees 2-3.
In Star II/Season 18 the Hayward Pipelines did not reach the postseason.
- They were the first San Francisco Bay League team to be eliminated from the postseason (Partytime) on day 8.
- They finished in last place in the San Francisco Bay League.
In Star II/Season 21 the Hayward Pipelines were the #3 seed in the San Francisco Bay League.
- They defeated the Sausalito Bouncy Castles 3-2 in the San Francisco Bay League Division Series.
- They clinched the pennant by defeating the San Gregorio Sand Crabs 4-3 in the San Francisco Bay League Championship Series.
- They became Star II Cup champions by defeating the Boulder Creek Cardsharps 4-2.
In Star II/Season 22 the Hayward Pipelines were the #2 seed in the San Francisco Bay League.
- They defeated the Richmond Slicks 3-1 in the San Francisco Bay League Division Series.
- They clinched the pennant by defeating the Oakland Bees 4-1 in the San Francisco Bay League Championship Series.
- They lost the Star II Cup Series to the Monterey Meteorologists , 1-4.
In Star II/Season 24 the Hayward Pipelines did not reach the postseason.
- They were the first San Francisco Bay League team to be eliminated from the postseason (Partytime) on day 9.