The Philadelphia Eagles weren't the only ones getting whooped on Saturday ... a couple of their fans got the same treatment from Dallas Cowboys supporters in the stands at Lincoln Financial Field.
Video shot by bystanders caught all the action ... showing two men in 'Boys jerseys getting into a verbal altercation with a man in a Randall Cunningham Eagles uniform.
The argument quickly turned physical ... when one of the Dallas supporters -- who was decked out in a CeeDee Lamb jersey -- walked straight to the Eagles fan and started throwing punches.