Stauffer signed a minor league contract with the Diamondbacks, Matt Eddy of Baseball America reports.
Stauffer struggled in two stops in the MLB last season, holding a 6.97 ERA in 18 appearances. However, he was excellent in the minors, going 4-1 in eight starts for Triple-A Las Vegas with a 2.48 ERA. He's a good piece in the minors and has the skill set to be an extra arm at the end of the bullpen if necessary.