Viola made his MLB debut with the Reds on September 8 at Coors Field against the Colorado Rockies, pitching in the sixth and seventh innings in relief of starter Matt Maloney.[3] He gave up a home run to Eric Young, Jr. to lead off the sixth inning,[4] Young's first career homer.[3] Viola also allowed a Todd Helton single during the inning.[4] He walked and struck out one batter each in the seventh, en route to a 3-1 Rockies victory.[5]
Baltimore Orioles
Viola was claimed off waivers by the Baltimore Orioles on April 21, 2010. After joining the Orioles he spent most of his time in Double AA Bowie but has been called up on 2 occasions.