NL West Notes: Corbin, Owings, Gregorius, Rockies

Patrick Corbin of the Diamondbacks has suffered "damage to the ulnar collateral ligament in his left elbow," the club announced today. Tommy John surgery is the initial recommended course of action for Corbin, a source tells the Arizona Republic's Nick Piecoro (Twitter). The 24-year-old, however, will seek a second opinion and will not be with the team to start the year. Needless to say, the injury could have wide-ranging implications for the club, which has spent big to win and has top prospect Archie Bradley waiting in the wings. Corbin is the most recent in a sudden run of young pitchers facing arm issues, Ken Rosenthal of FOX Sports wrote earlier this morning, discussing the state of pitching injuries in the game. Here are some more notes from the division, as it gets ready to kick-start the season in Australia:

• The Diamondbacks plan to give Chris Owings the starting shortstop job, reports ESPN.com's Jim Bowden (Insider link). Preferring his bat to the glove of fellow youngster Didi Gregorius, Arizona could now be in a position to trade the latter. Gregorius had a solid rookie debut last year, putting up average defensive marks and a .252/.332/.373 triple-slash (along with seven home runs) in 404 plate appearances. Some believe he will have greater defensive value moving forward, making him a fairly attractive piece for teams in need of shortstop help, though Arizona appears determined to command a big return in a trade.
• The Rockies are looking at the trade market for a right-handed setup option, Bowden reports in the same piece. Of course, he also adds that LaTroy Hawkins is likely to cede the closer role to lefty Rex Brothers at some point, which would make Hawkins available (along with Matt Belisle) as a late-inning righty.
• Meanwhile, Colorado "remain[s] concerned with their leadoff spot and center field," both of which were vacated when the team decided to trade Dexter Fowler to the Astros to create payroll flexibility. This report caps off a confusing round of musical chairs for the Rockies. After trading away Dexter Fowler and his $7.35MM salary (along with whatever he'll earn through arbitration next year), the team added an aging Justin Morneau for nearly as much (two years, $12.5MM) and gave situational lefty Boone Logan the third-largest guarantee of any reliever this offseason (three years, $18.5MM). The team then dealt serviceable southpaw Josh Outman for Drew Stubbs, who is now part of a three-man group (including Brandon Barnes, who came in the Fowler deal, and Charlie Blackmon) that will probably form some kind of platoon in center, according to Bowden.
• Of course, Bowden adds, the Rockies also took on salary in adding starter Brett Anderson via trade. He has reportedly been very impressive, looking healthy and throwing like he did before his string of injury issues.
• The Rockies face a number of roster battles that are still too close to call, reports Troy Renck of the Denver Post. The team is not inclined at present to trade away Blackmon or fellow left-handed-swinging Corey Dickerson, though that may become an option at some point.
• We learned earlier this morning that Dodgers catcher Miguel Olivo is seeking his release to pursue opportunities with another club.