"He came in sore, but he was able to get through his leg workout and his conditioning and he rode the bike and everything," Mills said.
The Astros were going to evaluate Norris further after he threw on the field prior to Wednesday's game, but Mills said it's too early to tell if Norris will make his next start. The Astros don't have a starting pitcher listed for Sunday's game in Arlington against the Rangers.
"Jeff and I went through two or three [alternatives] if ultimately that's what we go about doing," Mills said. "We're going to wait and see how it goes and how he progresses in the next couple of days."
Norris was removed from Tuesday's game after 3 1/3 innings after chasing down a popup in foul territory. He believes he injured the knee fielding a grounder in the first inning and making an out at first base.