Who says track and field isn't a contact sport?
Fists began to fly, and, soon, the brawl spilled into the infield.
The seriousness of the melee seemed to elude cameramen and announcers in a streaming feed of the meet, Deadspin reported. The fight wasn't even mentioned in a clip provided by the site. The YouTube posting of the official footage seems to have been removed.
The meet attracted 6,000 athletes from more than 300 schools, the Big Lead wrote.
Meet co-director Tim Fulton wrote in an email to HuffPost that Armory staff stopped the fight within seconds, and that both teams have been "disciplined internally."
Some officials were "taken down" in trying to break up the scene, and people "were freaking out," wrote one Deadspin commenter who claimed to have attended the meet.
The Huffington Post left a message with Mount Vernon's athletic department, and a call to Thomas Jefferson went unanswered.
As it turns out, athletes at the world class level aren't immune from such behavior either, the Guardian notes.
French teammates Mehdi Baala and Mahiedine Mekhissi Benabbad exchanged blows after a 1,500-meter race in Monaco in 2011.
This article has been updated to include a comment from meet co-director Tim Fulton.