Donna Kelce says 'everything was a competition' with sons Jason and Travis growing up. Now they're facing off in the Super Bowl.

• The Philadelphia Eagles and Kansas City Chiefs are set to face off in Super Bowl LVII.
• The matchup pits brothers Jason Kelce and Travis Kelce against each other.

Jason and Travis Kelce will become the first pair of brothers to go head-to-head in a Super Bowl when they take the field in Arizona. Jason plays center for the Philadelphia Eagles, while Travis is a tight end for the Kansas City Chiefs.

The Kelce Bowl leaves their family somewhat stuck in the middle. Who will their mother, Donna Kelce, be rooting for in the big game?

"The offense," Donna Kelce joked in an interview with The Today Show Wednesday.

Donna said that given the competitive fire the boys showed as kids, this matchup was a long-time coming.

"There were a lot of fights," Donna said. "Everything was a competition. It was a competition to see who could get to the table first, who could get in the front seat of the car. It's just typical sibling rivalry. They egged each other on. Travis was always trying to get at his older brother, to [make him] pay attention to him, so there were a lot of fights. That's the way boys are.

"You see them as kids and you wonder how they're going to relate to other children and you don't really know. They're the best in their city, maybe in their state, and you don't know how that's going to relate to the rest of the country, you just have no idea. I knew they were very talented, they were very athletic.

"It's just been a pure joy to watch them compete and be allowed to do it for so many years."

Once the matchup was set on Sunday, even the NFL began dubbing the upcoming meeting as "The Kelce Bowl."

"My mom can't lose," Travis said after the Chiefs' win over the Bengals in the AFC Championship.

Wearing a jersey that stitched together the jerseys of both of her sons, Donna played coy when asked if she might be backing one team a little more than the other.

"I think that Jason would say I am going to root for the baby of the family, which is Travis," Donna said. "And I keep trying to tell him, 'No, you've given me grandchildren,' so we'll leave it at that."

Jason Kelce already has two children, and he could have a third on Super Bowl Sunday, as his wife will be extremely pregnant on game day. She's even bringing her doctor to the game just in case.

It will undoubtedly be a stressful day for the family, but given that both brothers already have one Super Bowl ring to their name, there is some relief.

"They've already got the first win under their belts, so this is just going to be pure joy," Donna told TODAY. "We're going to really enjoy this, have a great time. Obviously, there's going to be somebody that's going to go home heartbroken. They won't have the bragging rights at the Thanksgiving table, but this is going to be an awesome event and I'm really looking forward to it."