Transactions| Date | Transaction | |||
| 5/30/08 | Purchased the contract of LHP Glendon Rusch from Triple-A Colorado Springs; optioned LHP Josh Newman to Colorado Springs. | |||
| 5/25/08 | Placed OF Matt Holliday on the 15-day disabled list; recalled OF Cory Sullivan from Triple-A Colorado Springs. | |||
| 5/24/08 | Placed IF Clint Barmes on the 15-day DL with a right knee sprain; Placed OF Brad Hawpe on the 15-day disabled list with a right hamstring sprain; Recalled OF Seth Smith and IF Ian Stewart from Triple-A Colorado Springs. | |||
| 5/16/08 | Signed LHP Glendon Rusch to a Minor League contract. | |||
| 5/14/08 | Placed RHP Ryan Speier on the 15-day disabled list with a right shoulder contusion; Recalled LHP Josh Newman from Triple-A Colorado Springs. | |||
| 5/11/08 | Purchased the contract of RHP Greg Reynolds from Triple-A Colorado Springs; optioned LHP Mark Redman Triple-A Colorado Springs. Transferred Jason Hirsh to the 60-day disabled list. | |||
| 5/7/08 | Signed LHP Aaron Fultz to a Minor League contract. | |||
| 5/6/08 | Optioned LHP Josh Newman to Triple-A Colorado Springs; Purchased the contract of RHP Alberto Arias from Triple-A Colorado Springs. | |||
| 5/5/08 | Sent RHP Jose Capellan outright to Triple-A Colorado Springs, he refused the assignment and is a free agent. | |||
| 5/3/08 | Placed shortstop Troy Tulowitzki on the 15-day disabled list, retroactive to April 30, with a left quadriceps tendon tear; Selected LHP Jorge De La Rosa to the 25-man roster. | |||
| 5/2/08 | Designated RHP Jose Capellan for assignment; Agreed to terms with INF Juan Castro on a Minor League contract. | |||