Mella was acquired by the Reds in the Mike Leake trade at the deadline in 2015 with Adam Duvall. He was originally signed by the Giants as an Internation free agent in 2011. Mella work with three pitches, including a mid-90s fastball, slider, and change. He has also worked in the past with a slightly slower two-seam fastball, but he gets nice action from it. The command has been solid in the past with a few off patches, but he also has the ability to consistently miss bats. His Minor League career K/9 totals are over nine in the lower levels.