Wal-Mart has conquered the retail, toy and grocery segments of the U.S. market. Now the world’s largest company thinks it can accurately predict the winner of the Super Bowl too.

The retailer said higher sales at its stores of T-shirts of the big game’s participating teams has successfully predicted the outcome in three of the last four years. Sorry, Philadelphia Eagles fans, but your support was not enough to overcome quarterback Tom Brady and the New England Patriots in 2005.

Fans of the Chicago Bears (pictured right buying team merchandise after Chicago won the NFC championship game), who will play the Indianapolis Colts in Super Bowl XLI in Miami on Feb. 4, can take hope. Wal-Mart said in the early going, Bears’ T-shirts hold a slight edge as of Jan. 26.

Oddsmakers are ignoring such history, however, having established the Colts as the favorite by about a touchdown.

Wal-Mart may be hedging its bets as it also pointed out that Colts fans have bought more DVDs about their team’s history. And the store in Rensselaer, Indiana — the halfway point between Chicago and Indianapolis — is selling merchandise for both teams.

Colts fan still have a chance to change the outcome and ring up more sales for Wal-Mart as the company will provide a pregame update of the T-shirt sales figures on Feb. 2.