The 33-year-old pitcher appeared in 77 games for the Padres in 2011. He went 6-8 last season with a 3.51 ERA and 43 strikeouts in 74.1 innings pitched. However, Qualls came on at the end of the season.
In his final 19 appearances, he had a 1.96 earned run average and held batters to a .219 batting average.
Since the 2005 season, Qualls has made the most appearances of any MLB pitcher and is second in wins by a reliever. Qualls was originally an Astros selection. He has spent time with the Astros, Diamondbacks, Rays and Padres during his career and has 51 saves and an ERA of 3.78. His best seasons were arguably in 2007-2008 for the Astros. He struck out 78 batters in 82.2 innings in 2007 and 71 batters in 73.2 innings in 2008.