He threw six scoreless innings Tuesday night in his final rehab start with Triple-A Round Rock. Norris and manager Brad Mills liked what they saw and thought he was ready to resume starting with the club.
"It's important to get him going the way he's able to pitch," Mills said. "As long as he's 100 percent physically, and that seems the case in his rehab starts, we're going to get him going and pitching how he's capable of pitching."
Mills said the Astros would wait to announce who Norris would replace in the rotation. For now, Mills will slot Norris between Roy Oswalt and Brett Myers, giving Myers, who has thrown 101 1/3 innings in 15 starts, some additional rest.
Norris had a 3.06 ERA in three starts with the Express. He made his last Major League start against the Rays on May 23.
"I feel really good," Norris said. "I'm definitely ready to go."