Heintzelman spent all of 1975 and 1976 in the Minors after coming up with the St. Louis Cardinals in 1973 and playing parts of 1973 and 1974.
Over those two games in 1977, he went 0-2 at the plate while not getting any time defensively out in the field, though I did post his position as “2B” instead of pinch-hitter.
Regardless, in 1978 he’d play what turned out to be the last games of his MLB career when he appeared in 27 games for the Giants, batting .229 with eight hits in 35 at-bats, with a double and a couple homers thrown in.
He’d spend all of 1979 in the Minors, but would retire soon after, finishing up his Big League tenure with a career .243 average, with 34 hits over 140 at-bats in 90 games between 1973 and 1978.
