After months of speculation, the Indianapolis Colts made it official Thursday evening when they selected Andrew Luck as the No. 1 overall pick in the NFL draft. The Stanford quarterback has a big pair of shoes to fill now that Peyton Manning has decamped to Denver. Robert Griffin III, Baylor’s quarterback, was the second pick of the evening. He’ll be heading to the Washington Redskins. The Cleveland Browns had the third pick, choosing Alabama running back Trent Richardson. The draft was held at New York’s Radio City Music Hall.