Pacific Coast League. There he continued to struggle, posting a 2–5 record, a 7.36 ERA, 28 strikeouts, 32 walks, and 44 innings pitched in 10 starts. On August 1, the Royals traded him along with Jeremy Affeldt to the Colorado Rockies for Ryan Shealy and Scott Dohmann. Colorado Rockies 2006 The Rockies assigned Bautista to the Triple-A Colorado Springs Sky Sox of the Pacific Coast League where he started six games, posting a 1–4 record, a 4.50 ERA, 35 strikeouts, and 16 walks in 36 innings pitched before being called up to the Rockies in September. He appeared in four games, three of them in relief with Colorado. In 12 games (eight starts) with Kansas City and Colorado on the season, Bautista had an 0–3 record, a 5.62 ERA, 27 strikeouts, and 21 walks in innings. His Pacific Coast League totals for 2006 were a 3–9 record, a 6.08 ERA, 63 strikeouts, and 40 walks in 80 innings pitched. 2007 Bautista was optioned to Colorado Springs halfway through spring training in 2007. On April 29, he was called up by the Rockies to replace Ryan Speier in the bullpen. He gave up one run over innings and won two of the first four games he appeared in before he then allowed 11 runs in one inning pitched over his next three outings. After Bautista allowed six runs in of an inning on May 13 in a 15–2 loss to the San Francisco Giants, bringing his ERA to 19.06, he was sent back to Colorado Springs. In 51 games, all in relief, at Colorado Springs, he had a 3–2 record, a 2.92 ERA, 63 strikeouts, and 31 walks in innings. He was recalled when rosters expanded in September. On September 12, he made his final major league start in a bullpen game, throwing two scoreless innings in a 12–0 victory over the Philadelphia Phillies. In nine games, he had a 2–1 record, a 12.46 ERA, eight strikeouts, and four walks in innings pitched. He was left off the playoff roster as the Rockies went to the World Series. On December 4, the Rockies traded Bautista to the Detroit Tigers for pitcher José Capellán. Detroit Tigers Bautista began 2008 with the Tigers in a relief role, often pitching in the eighth-inning as the "setup man" for veteran closer Todd Jones. In his debut on Opening Day (March 31), he gave up a