The drama between a team of feuding exes and a team of baseball wives will hit a boiling point on The Amazing Race Sunday night.

In a sneak peek clip, a confrontation between Marie and Baseball Wives Nicky and Kim over who had the better position on the waitlist for a better flight time explodes, and puts a former alliance between the two teams at risk.

In this episode, titled King Arthur Style, teams are flying from Santiago, Chile to Lisbon, Portugal, according to Reality Fan Forum. Once they've arrived in Lisbon, they have to ride a tram to the Miradouro da Portas do Sol and Interpret a Painting, use a giant compass on a world map at the Monument to the Discoveries, and encounter a roadblock where one team member must hit shields with a Medieval Knight's Ballista before checking in at the Pit Stop. The last team to arrive faces the risk of elimination from the race.

While still in the Santiago Airport, Dating Couple Jason and Amy and Marie (who is running the race with her ex, Tim), are checking to see if they can get on standby for an earlier flight into Lisbon, when Nicky and Kim approach the counter and announce that they were already on standby. The news does not sit well with the confrontational Marie, who accuses the baseball wives of lying, because the standby list is only being formed now according to her.

"There wasn't an option to be on standby before. You can't bump in front of us online and get yourself on the list," she snarled to the girls at the counter.

After the girls succeed in getting bumped onto the earlier flight, Marie will get even more angry.

"You're dead to me," she said in the clip.

During the second leg of the race, the two teams had actually formed a tentative alliance because Kim's husband, MLB Player David DeJesus, had played college baseball with Tim. The alliance could have worked in the wives' favor, because Marie and Tim still have an extra Express Pass to hand out by the end of the fifth leg.

Any hopes the Wives may have had at getting that Express Pass are more than likely dashed now.

"As far as our relationship with the Bunnies goes, we hate them right now," Marie said in the clip.

The Amazing Race airs Sundays after 60 Minutes on CBS.

Tags: The Amazing Race CBS television Reality TV competition show