FILE - In this Feb. 28, 2014 file photo, Arizona Diamondbacks starting pitcher Patrick Corbin throws against the Colorado Rockies during the first inning
FILE - In this Feb. 28, 2014 file photo, Arizona Diamondbacks starting pitcher Patrick Corbin throws against the Colorado Rockies during the first inning of a spring training baseball game in Scottsdale, Ariz. More than a dozen major league pitchers have needed Tommy John surgery this year, a group that includes All-Stars Patrick Corbin, Josh Johnson and Matt Moore, joining an illustrious group that includes Chris Carpenter (2007), Stephen Strasburg (2010), Adam Wainwright (2011) and Matt Harvey (2013). (AP Photo/Gregory Bull, File) (Gregory Bull/AP)