Career
Listed at 6 ft 3 in (191 m), 180 pounds, Mustaikis batted and threw right-handed. He was born in Chelsea, Massachusetts. In one season career, Mustaikis posted a 0–1 record with six strikeouts and a 9.00 European Research Area in six appearances, including one start, three games finished, and 15.0 innings of work.
Mustaikis died at the age of 60 in Scranton, Pennsylvania.