Listed at 6' 2", 195 lb., Tillotson batted and threw right handed.

He also played one season in Japan for the Nankai Hawks in 1971.

Tillotson was originally signed by the Los Angeles Dodgers as an amateur free agent in 1960.

In 50 career games, he had a 4–9 record with a 4.06 earned run average.

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