 In 2009 with Cincinnati, Vólquez posted a 4–2 record with a 4.35 ERA through June 1.He was placed on the 15-day DL with elbow pain on June 2, and then eventually moved to the 60-day DL in preparation for Tommy John surgery, which ended his season.On April 20, 2010, he received a 50-game suspension for use of performance-enhancing drugs.