In a Class A minor league contest, Mavericks’ manager Frank Peters rotates his starting nine allowing each player to take a different position on the field for every inning. The innovative strategy works as Portland posts an 8-7 victory over the Tri-Cities Ports, their Northwest League opponents.

This Day In Baseball

On August 31, 1974 — In a Class A minor league contest, Mavericks’ manager Frank Peters rotates his starting nine allowing each player to take a different position on the field for every inning. The innovative strategy works as Portland posts an 8-7 victory over the Tri-Cities Ports, their Northwest League opponents.

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Sources:
Baseball Reference August 31
National Pastime August 31
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game