[1] He played in Major League Baseball as a left-handed pitcher for the San Diego Padres in 1972.

[2] He was traded along with Derrel Thomas and Bill Greif from the Astros to the Padres for Dave Roberts on December 3, 1971.

[3] Schaeffer made his major league debut on April 18, 1972, at the age of 23 with the San Diego Padres.

On July 29, 1972, during a 17 inning, 4–3 victory over the Reds, Schaffer picked up his lone MLB save by retiring the final batter of the game.

This biographical article relating to an American baseball pitcher born in the 1940s is a stub.