The D-backs have been eager to see Bradley, who was 14-5 with a 1.84 ERA and 162 strikeouts last season at two Minor League levels, including 12-5 with a 1.97 ERA and 119 strikeouts in 21 starts for Double-A Mobile.
"We'd like to see everybody, but because of the weather we may not see everybody," Gibson said. "We watched a lot of their [simulated] games, watched their bullpens quite a bit. We have priorities, for sure. We want to make sure some of those guys get into the game."
Bradley was a possibility to come out of camp in the big league starting rotation. But that started to dim when the D-backs signed free agent Bronson Arroyo to a two-year deal, guaranteeing him $23.5 million. Barring injury, the D-backs rotation should be Patrick Corbin, Brendon McCarthy, Wade Miley, Trevor Cahill and Arroyo.
Right now, Gibson said he'd just like to see the 21-year-old Bradley, Arizona's first-round pick (seventh overall) in the 2011 First-Year Player Draft, throw his fastball and have a positive outing.
"I just want him to go out there and pitch," Gibson said. "He's been working on everything. The one thing to worry about is him getting too much on his mind. He's a natural power guy. He knows he's got to command the zone. He knows he's got to throw strikes. He's got something most guys don't have [a hard fastball] and we'd like to see him use it. I don't want him to go out there and think he's some finesse pitcher right now."
Barry M. Bloom is a national reporter for MLB.com and writes an MLBlog, Boomskie on Baseball. Follow @boomskie on Twitter. This story was not subject to the approval of Major League Baseball or its clubs.