Despite concerns about his arm strength and mobility,  Manning was selected first overall in the 1998 NFL Draft by the Indianapolis Colts .  Although many considered Washington State quarterback Ryan Leaf his rival for the first selection in the draft, and Leaf's quarterback rating was higher, all six experts Sports Illustrated consulted believed that Manning was superior.  Five said that they would take him first in the draft; Sid Gillman said of Manning, "this is a pro quarterback".  The Colts' scouts initially favored Leaf, but the team's management and coaches were gradually won over by Manning's attitude, particularly as Manning showed up prepared to a scheduled interview meeting with the Colts' staff while Leaf arrived late. Colts general manager Bill Polian who had the final say on the draft selection recalled Manning saying "I'll leave you with this thought. If you take me, I promise you we will win a championship. If you don't, I promise I'll come back and kick your ass."