 After his playing career, he opened Future Pro Baseball, a batting cage in Burlingame, California, where he also offers private batting instruction.Whitfield also runs a youth baseball camp and is the inventor of a soft-toss machine called the "Terry-Toss", which can be found at Future Pro Baseball; and as a fan attraction at professional stadiums in California such as Oracle Park in San Francisco and Oakland Coliseum in Oakland.He used to be the head baseball coach at Burlingame High School.