Oscar Theander Harstad (May 24, 1892 - November 14, 1985) was a Major League Baseball pitcher who appeared in 32 games for the Cleveland Indians during the 1915 Cleveland Indians season. After his baseball career, "Theander" as he was called by his family and friends, became a dentist serving the Milton-Freewater, Oregon community for over 50 years.
He was born in Parkland, Washington and died in Corvallis, Oregon at age 93.[1] He was buried at Oaklawn Cemetery in Corvallis.[1]