Dickson, however, has to arrive in time for Thursday's game, because he'll be the starting pitcher. He's getting a game in order to give some of the Cards' other starters an extra day of rest.
Catcher Tony Cruz is the most likely other candidate for a callup before Memphis is eliminated, but Dickson will be the only one to arrive on the first day.
Other candidates for promotion later in the month include infielder Tyler Greene, first baseman/outfielder Mark Hamilton, and outfielder Andrew Brown. It's highly unlikely that third baseman Zack Cox, the Cardinals' first-round Draft pick in 2009, will be called up from Double-A Springfield.