(CNN) — It’s all fun and games in the world of comic book movies — until pro football gets involved.
Chris Pratt and Chris Evans — two of the hottest actors in Hollywood because of their superhero roles in recent Marvel Studios movies — are waging a friendly feud on Twitter, resulting in an epic bet over the Super Bowl.
In one corner, we have “Captain America’s” Evans, a dyed-in-the-wool fan of the New England Patriots.
Evans landed the first blow Monday with a tweet to Pratt that said in part, “For the next 2 weeks, you are not my friend, you are my enemy.”
Well, well, well @prattprattpratt, looks like our teams are going into battle. For the next 2 weeks, you are not my friend, you are my enemy
— Chris Evans (@ChrisEvans) January 19, 2015
In the other corner, we have Pratt, the “Guardians of the Galaxy” star, who roots for the Seattle Seahawks. Pratt quickly fired back with a dig at Evans’ Marvel character.
@ChrisEvans We both know there's only one Captain America and his name is Russell Wilson. #SuperBowlBound #LOB #Repeat
— chris pratt (@prattprattpratt) January 19, 2015
Then Evans upped the ante.
@prattprattpratt them's fightin words. Stakes? #whatisaseahawkanyway #somethingtombradyhunts
— Chris Evans (@ChrisEvans) January 19, 2015
Pratt framed the first half of the bet: If the Patriots lose, Evans must come to Seattle and visit a children’s hospital in his superhero duds and waving a Seahawks fan-club flag.
@ChrisEvans OK. Seahawks win you fly yourself to Seattle, visit @seattlechildren hospital as Captain America, waving the 12th man flag.
— chris pratt (@prattprattpratt) January 21, 2015
And Evans responded in turn, daring Pratt to come to a Boston pediatric cancer center dressed as Star-Lord from “Guardians.”
@prattprattpratt I accept. And when the Patriots humiliate your seachickens, I expect Star-Lord to arrive at @chris_haven in a Brady jersey
— Chris Evans (@ChrisEvans) January 21, 2015
And so the bet is on. It’s always possible that this exchange is a joke or a promotional stunt — Evans’ Captain America co-stars in “Avengers: Age of Ultron,” hitting theaters May 1 — but the Super Bowl just got a little more exciting.
Now Marvel just hopes the two will mend fences after the game on February 1.