Tulsa Drillers
Daley was signed as an amateur free agent by the Colorado Rockies on June 11, 2004. Daley made his Minor League debut in 2004 with the Casper Rockies. He spent 2005 with the Asheville Tourists, and split 2006 between the Modesto Nuts and the Tulsa Drillers. He spent the 2007 season with the Double-A Tulsa Drillers. Daley spent the 2008 season with two teams, playing for the Drillers and the Colorado Springs Sky Sox, going 4–6 in 63 games in Tulsa and Colorado Springs.