A 20th-round draft choice of the Astros in 1987, lefthander Hartgraves posted a 2-0 record with a 3.90 ERA in 59 games during the 1995 and 1996 seasons. Waived in July of the 1996 season, he was claimed by the Braves and later pitched with the Giants.

Overall, he had a 3-0 career record with a 4.41 ERA.