The Colorado Rockies will retire former first baseman Todd Helton’s No. 17 on Aug. 17. The club announced its promotional schedule Thursday, and it includes a three-day weekend honoring Helton, who retired at the end of last season. Helton will be honored in a ceremony Aug. 17 before the Rockies play the Cincinnati Reds. Also, Root Sports announced former Rockies outfielder Ryan Spilborghs will join its Rockies broadcast team this season.