deadline on July 31, Affeldt was traded along with Denny Bautista to the Colorado Rockies for Ryan Shealy and Scott Dohmann. Affeldt recalled, "When [Royals General Manager Dayton Moore] traded me, he said, 'I feel like I need to give you a fresh start. You can learn to enjoy the game again.' I have a lot of respect for him now because he saw that. It was a move that had to be made for me to be able to continue playing baseball. I'm very thankful for it." Colorado Rockies (2006–2007) With the Rockies, Affeldt was used exclusively out of the bullpen. He got his only save of the season on September 19 in a 12–4 win over the San Francisco Giants. Affeldt finished the 2006 season with a 6.20 ERA in fifty–nine games. Affeldt spent the entire 2007 season in the bullpen, where he was used as a lefty specialist. Affeldt had a 2.51 ERA through his first fifty–six games of the year. He did not give up a home run until Pete Laforest hit one off of him in an 11–9 loss to the San Diego Padres on August 16. He struggled at the end of the year, with a 7.30 ERA in his final nineteen games. He still finished the year 4–3, with a 3.51 ERA in seventy-five games, and the Rockies made the playoffs as the NL Wild Card. He made his postseason debut on October 4 in the Division Series against the Philadelphia Phillies and gave up one run (on a home run by Ryan Howard) in one inning in a 10–5 win by Colorado. The Rockies swept the series to advance to the Championship Series against the Arizona Diamondbacks. In the first game, Affeldt entered with two outs and the bases loaded with the Rockies leading 5–1. He retired Stephen Drew to help the Rockies win 5–1. The Rockies swept the Diamondbacks to meet the Boston Red Sox in the World Series. Affeldt pitched in all four games of the World Series without giving up a run, but the Rockies were swept by the Red Sox. Affeldt became a free agent after the season. Cincinnati Reds (2008) Affeldt was signed to a one–year deal by the Cincinnati Reds on January 23, 2008, to compete for a spot in the starting rotation. He said of signing and competing to start, "My heart skipped a beat