Template:SeasonBySeason StarIVCup HP

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 3 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.
- They finished in last place in the San Francisco Bay League.
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 5 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 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.
In Star IV/Season 7 the Hayward Pipelines did not reach the postseason.
- They narrowly missed the postseason by losing the tiebreaker to the Mountain View Miners and the Sutro Tower .
In Star IV/Season 9 the Hayward Pipelines did not reach the postseason.
- They narrowly missed the postseason by losing the tiebreaker to the Mountain View Miners .
In Star IV/Season 11 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.
- They finished in last place in the San Francisco Bay League.
In Star IV/Season 12 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.
- They finished in last place in the San Francisco Bay League.
In Star IV/Season 14 the Hayward Pipelines were the #3 seed in the San Francisco Bay League.
- They swept the Oakland Bees 3-0 in the San Francisco Bay League Division Series.
- They lost the San Francisco Bay League Championship Series to the San Jose Avionics 1-4.
In Star IV/Season 15 the Hayward Pipelines did not reach the postseason.
- They narrowly missed the postseason by losing the tiebreaker to the Oakland Bees and the San Jose Avionics .
In Star IV/Season 16 the Hayward Pipelines were the #3 seed in the San Francisco Bay League.
- They lost the San Francisco Bay League Division Series to the Vallejo Barnstormers 1-3.
In Star IV/Season 21 the Hayward Pipelines were the #1 seed in the San Francisco Bay League.
- They swept the San Jose Avionics 3-0 in the San Francisco Bay League Division Series.
- They clinched the pennant by defeating the Sausalito Bouncy Castles 4-3 in the San Francisco Bay League Championship Series.
- They lost the Star IV Cup Series to the Freedom Fries , 2-4.
In Star IV/Season 22 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 lost the San Francisco Bay League Championship Series to the Berkeley Brutalists 3-4.
In Star IV/Season 23 the Hayward Pipelines did not reach the postseason.
- They narrowly missed the postseason by losing the tiebreaker to the Mountain View Miners and the Richmond Slicks and the Sutro Tower .
In Star IV/Season 24 the Hayward Pipelines were the #4 seed in the San Francisco Bay League.
- They lost the San Francisco Bay League Division Series to the Sutro Tower 2-3.