Jonathan Mayo, filling in for Alyson Footer on the recap, (my guess is they were afraid to let her near a key board) "Russ Ortiz threw a scoreless frame, getting in some work for his Thursday start."
LinkDoesn't look like a quote from Cooper, but seems the most likely explanation. Might as well let him throw his bullpen in the game. Not like anyone expected the Astros to score 6 runs at that point.