"Diamondbacks right fielder Justin Upton's left shoulder continued to keep him out of the lineup Sunday, but he still doesn't consider the injury severe.

"I'm pretty confident it's not too serious," he said. "We'll do what we've been doing - treating it, taking it day by day. I'm pretty confident it'll feel better pretty soon.

"It's just still sore. With all the guys here, there's no use in rushing it. We've got bodies who can play. It's more worth it to get it 100 percent before I come back."

Upton has missed the past five games since hurting the shoulder on an awkward swing in the seventh inning of Monday's game. The shoulder has given Upton occasional problems since his first spring training with the Diamondbacks in 2006.

"I don't know if it's a concern, but it's just taking a little longer than we thought," interim manager Kirk Gibson said."