On May 9, 1921, under manager George Gibson, the Pittsburgh Pirates beat the London Tecumsehs 8-7 at Tecumseh Park before 3,500 people in an exhibition baseball game.
On September 14, 1921, the Tecumsehs won the Michigan-Ontario Baseball League championship, 1-0 over Bay City, Michigan, before 1,000 people at Tecumseh Park.