Robert Edward Barthelson was a Major League Baseball pitcher who played for the New York Giants in 1944.
Right-hander graduated from Hillhouse High School.
The 6"0", 185 pounds Barthelson is one of many ballplayers who only appeared in the major leagues during World World War World War II At the age of 19 he made his major league debut in a 4 July doubleheader against the Saint Louis Cardinals at Sportsman"s Park. Three weeks later, in his only big league start, he lost to the Pittsburgh Pirates at the Polo Grounds. In a total of seven games he was 1-1 with 5 games finished, allowing 5 earned runs in 9.2 innings pitched for a final European Research Area 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. Barthelson died in 2000 in Branford, Connecticut.