Vicente Campos

Campos came over to the Diamondbacks at the trade deadline from the Yankees in exchange for Tyler Clippard. He made one long relief appearance for Arizona before being sent back to Triple-A, but his season was cut short when he was diagnosed with a fractured right arm in early September. His recovery from surgery will take about eight months, so Campos will not be ready for the beginning of the season. The role Campos fills when he does come back is unclear. The righty has shown good stuff, as evidenced by his 25 percent or better strikeout rate in the low minors between 2010 and 2012. And Arizona's rotation struggled mightily in 2015, so there could be an opening for Campos. However, this is his second major surgery as a pro (he underwent Tommy John in 2014), so it remains to be seen how his arm responds.