The Rockies made roster room for Hale the day before, when they optioned left-handed pitcher Ken Roberts to Triple A Albuquerque.
Hale takes the place in the rotation of Eddie Butler, who was optioned last week to the club's Triple-A affiliate in Albuquerque. Butler was 3-10 with a 5.90 ERA before being sent to Albuquerque.
Hale had been on the disabled list since July 10 because of a left groin strain. He was 3-4 with a 5.69 ERA in nine games - eight of them starts - for Colorado this season.