just four teams
Antonacci: Mom's cooking, dad's coaching helped Olerud become Canadian Baseball HOFer — Canadian Baseball Network
What baseball player spent his entire career with one team? - Quora
2023 West Virginia University Baseball Guide by Joe Swan - Issuu
Washington State's John Olerud was arguably college baseball's best two-way player
Best two-way prospects in MLB Draft history
Locally: Former Washington State, Seattle Mariners standout John Olerud to be inducted into Pac-12 Conference Hall of Honor
News - West Coast League
Inside the legend of John Olerud, college baseball's two-way star - ESPN