He compiled an 8–7 win–loss record and a 4.95 earned run average (ERA) in 54 major league games.

He compiled a record of 7-6 with five complete games with a 4.53 earned run average (ERA).

[1] Interviewed in 1976, Olsen recalled striking out Babe Ruth on June 14, 1922, with two runners on base and the Tigers leading, 4-2.

Olsen recalled that, when Babe stepped to the plate, he tried to rattle the rookie pitcher by calling him an SOB and telling him to "throw the ball and duck."

[2] An account in The New York Times confirms that Olsen struck out Ruth with two men on base in the bottom of the fifth inning and with the Tigers leading, 4-2.