Angelina Jolie's Midwestern-born baby daddy recently turned the boys on to "the only sport Brad himself has ever been personally passionate about -- American football," the source revealed.
And Pitt hopes Maddox, 12, and Pax, 10, who were born in Asia, are a lot better at the game than he was!
"Brad is definitely taking out his frustrations about not being as good a football player as he wanted to in high school on his sons, who are getting a real feel for the sport and starting to get to the age where they watch games with their dad,” the source said.
In Pitt's youth in Missouri, he made the football team "but was always a bench warmer," the source noted. And sadly for the future movie star, as he watched, "his friends went on to make the All-State team."
Now, the Moneyball actor "clearly dreams of going to his sons' sports games and cheering them on.
"It's an experience that comes right out of his upbringing and what he sees going on with his extended family. He wants these two boys not just to play team sports like football, but to succeed at a higher level than he did."
The insider said that globe-trotter Pitt is not just limiting them to American football, however.
The source said: "He’s introduced them to an array of sports. While in Australia they’ve been watching rugby and the boys have been playing a less violent version of it on the beach."