The Rockies' 5-4 win Tuesday night against the Arizona Diamondbacks was upstaged by the scene of right-hander Tyler Chatwood being escorted off the mound by manager Walt Weiss and head trainer Keith Dugger.

The Rockies won the game on a home run to right by Drew Stubbs in the ninth inning off Addison Reed. It was Stubbs' first homer this year. Then Stubbs protected the lead with a great catch in center field of a drive by Arizona's Eric Chavez with two on base to end the game.

Chatwood had surgery last October to remove a bone chip in his right elbow. He also missed 28 days last season because of tightness in his elbow.

Chatwood left a mess for reliever Chris Martin to clean up, and Martin did a spotless job. He got Chris Owings to ground out to third baseman Nolan Arenado, who threw to the plate for the force out. Then Martin struck out pinch-hitter Roger Kieschnick and induced Tony Campana to hitter a chopper to first.

Lefty Rex Brothers then came in and pitched a 1-2-3 seventh.

The Rockies have managed to compile a 16-12 record despite losing two starting pitchers to injury. Right-hander Jhoulys Chacin had a strained right shoulder during spring training and just finished his rehab starts. He could rejoin the rotation as soon as this weekend. Left-hander Brett Anderson made just three starts before he broke the index finger of his left hand. He's on the 60-day disabled list and could be out until the all-star break.