Green Bay Packers kicker Mason Crosby and his mother, Karen, celebrate after the Packers' Jan. 15 win over the Dallas Cowboys.[/caption]

Updated at 12:51 p.m. on Jan. 19 

For Georgetown High School graduate and Green Bay Packers kicker Mason Crosby, beating the Dallas Cowboys with a game-winning 51-yard field goal kick in the Cowboys' own stadium was especially satisfying.

In a 34-31 win over the Cowboys in the NFC Division playoff game Jan. 15, Mason knocked through two back-to-back field goals to become the first player to make two field goals of 50 yards or longer in the last two minutes of a post-season game, according to the NFL.

Mason's mother, Karen, was there to see it in person.

“We weren't nervous, for our family, we just wanted the moment for Mason, and we wanted him to do it for the team," Karen said. "That’s what his dreams were as a little boy. As a kid he always dreamed of the clutch moments."

Karen said she and her husband, Jim, both grew up in the Dallas area and that Mason grew up a Cowboys fan.

"[Some of Mason's] first memories were watching the Cowboys and wearing a uniform," Karen said.

When the game clock started to wind down, Karen said she knew it was going to come down to Mason.

“I told everyone, 'This is going to come down to Mason’s right foot,'" Karen said. "We never get excited until we see both officials with both their hands up, and when they did we went crazy and were crying so hard. We didn’t even know what happened with Mason.”

Karen said the family was sitting in the middle of Cowboys fans, and even they congratulated the family after the game.

The Crosby family has lived in the Georgetown area for 27 years, and Mason got his football start at Benold Middle School. Mason graduated from GHS in 2003 and received a full scholarship to kick for the University of Colorado.

"He wanted to be a kicker; he knew he was unique," Karen said.

Karen runs Georgetown-based nonprofit The Locker, which allows students to help meet fellow students’ basic needs by providing items such as hygiene products and school supplies.

Crosby and the Packers take on the Atlanta Falcons in the NFC Championship game this Sunday.