Kevin Millar and John Lackey made their NFL allegiances pretty clear Sunday.

The two former Boston Red Sox went to the NFC Wild Card Game in Arlington, Texas, between the Dallas Cowboys and the Detroit Lions, and they wore some sweet cowboy hats to show their support. They even ran into fellow Cowboys fan and former Red Sox pitcher Ryan Dempster, who elected to wear something much more subtle.

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The matching Troy Aikman jerseys really bring the photo together.

The three went home happy, too, as the Cowboys came back from a 10-point deficit at halftime to win 24-20.