Pioneer Stadium hosted the Cal State Hayward Pioneers football (back when the school was called California State University, Hayward).
The 1969 team had a record of 9–1, the best record in program history.
The team discontinued in 1993 due to financial issues and poor attendance.
Since then, the stadium and the school have been without a football team.
There has been talk of bringing football back to California State University, East Bay, but the possibility of it is unclear.

In 1980, the stadium was the initial home field for the Golden Gate Gales of the American Soccer League (ASL).

In 2010, the stadium hosted the short-lived, but successful FC Gold Pride of the Women's Professional Soccer (WPS) league, until the team discontinued in November of that year.
Pioneer Stadium hosted the Cal State Hayward Pioneers football (back when the school was called California State University, Hayward). The 1969 team had a record of 9–1, the best record in program history. The team discontinued in 1993 due to financial issues and poor attendance. Since then, the stadium and the school have been without a football team. There has been talk of bringing football back to California State University, East Bay, but the possibility of it is unclear.
In 1980, the stadium was the initial home field for the Golden Gate Gales of the American Soccer League (ASL).
In 2010, the stadium hosted the short-lived, but successful FC Gold Pride of the Women's Professional Soccer (WPS) league, until the team discontinued in November of that year.
Pioneer Stadium