Andrew Luck

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Indianapolis Colts quarterback Andrew Luck (12) receives congratulations from interim coach Bruce Arians, left, after throwing a 7-yard touchdown pass to wide receiver Reggie Wayne during the second half of an NFL football game against the Kansas City Chiefs on Sunday, Dec. 23, 2012, in Kansas City, Mo. The Colts won 20-13. (AP Photo/Ed Zurga)

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Indianapolis Colts quarterback Andrew Luck (12) during the first half of an NFL football game against the Kansas City Chiefs Sunday, Dec. 23, 2012, in Kansas City, Mo. (AP Photo/Charlie Riedel)

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Indianapolis’ Andrew Luck (12) and Seattle’s Russell Wilson have joined Robert Griffin III as rookie quarterbacks leading their teams toward the playoffs. (Associated Press)

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Indianapolis Colts' Andrew Luck (12) throws during the second half of an NFL football game against the Tennessee Titans Sunday, Dec. 9, 2012, in Indianapolis. (AP Photo/Michael Conroy)

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Indianapolis Colts quarterback Andrew Luck (12) and teammate defensive end Cory Redding (90) celebrate their 35-33 win over the Detroit Lions after an NFL football game at Ford Field in Detroit, Sunday, Dec. 2, 2012. (AP Photo/Paul Sancya)

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Indianapolis Colts quarterback Andrew Luck (12) outruns Jacksonville Jaguars strong safety Dawan Landry (26) to score a touchdown during the second quarter of an NFL game Thursday, Nov. 8, 2012, in Jacksonville, Fla. (AP Photo/Phelan M. Ebenhack)

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Indianapolis Colts' Andrew Luck looks to pass during the first half of an NFL football game against the Minnesota Vikings in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/Michael Conroy)

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Andrew Luck was taken first in 2012 draft by the Indianapolis Colts. (Associated Press)

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Redskins rookie quarterback Robert Griffin III (left) won the Heisman Trophy last year, and Colts counterpart Andrew Luck finished second. Their fortunes were reversed on draft day in April when Indianapolis selected Luck with the No. 1 overall pick, and Washington traded up with St. Louis to take Griffin at No. 2. The two will square off Saturday in an exhibition at FedEx Field. (Associated Press)