 In a total of seven games he was 1–1 with 5 games finished, allowing 5 earned runs in 9 innings pitched for a final ERA of 4.66.After his brief major league career ended, Barthelson became a pitcher for the West Haven Sailors, an independent semiprofessional team in West Haven, Connecticut, that scheduled games against Negro League and major league teams.He also pitched for the San Francisco Seals in 1945, for the Minneapolis Millers in 1946, and for the Sacramento Solons in 1947.