Parker, a former quarterback for Clemson, has played 99 games as the right fielder for the Class A Modesto Nuts this season, hitting .308 with 22 home runs and 72 RBIs.
He and the six other Rockies prospects will play for the defending league champion Salt River Rafters. They include: pitchers Isaiah Froneberger (Modesto), Cory Riordan (Triple-A Colorado Springs) and Coty Woods (Colorado Springs); catchers Lars Davis and Jose Gonzalez (Double-A Tulsa); and outfielder Kent Matthes (Tulsa).
A pitcher will be named to the roster later.
Parker (No. 9) and Matthes (No. 17) are ranked among the Rockies' top prospects.
The Arizona Fall League opens its 20th season for prospects with less than a year of Major League service Oct. 9.