EXCLUSIVE: Tom Brady Talks Life Off the Field, Says 3-Year-Old Daughter 'Owns' His Life

This video is unavailable because we were unable to load a message from our sponsors.

If you are using ad-blocking software, please disable it and reload the page.

Tom Brady is one of the fiercest competitors in the NFL, commanding respect on the field and leading 300-pound men into battle against their opposition, but at home, the New England Patriots quarterback is powerless against his 3-year-old daughter, Vivian.

"That little girl owns my day -- owns my life," Brady tells ET.

PICS: Gisele Bundchen and Tom Brady Make First Red Carpet Appearance Since 2014

Brady has two kids with wife Gisele Bundchen -- Vivian and 6-year-old son Benjamin. He has a 9-year-old son, John, with ex-girlfriend Bridget Moynahan.

"[I] cannot say no to anything," Brady explains. "Whatever she tells her dad to do, that's what I do. That's just the way it goes."

As for his sons, Brady addressed the possibility of seeing one of them in a Super Bowl someday.

WATCH: Gisele Bundchen Shares Romantic Pic to Celebrate 7-Year Wedding Anniversary With Tom Brady

"Who knows if they'll play sports," says the four-time Super Bowl champ. "If they do, I think it's great because I can really help them out, but if they don't, that's up to them."

While on the field, he takes orders from Bill Belichick, but on the red carpet, Brady is coached by his supermodel wife.

"She definitely helps me out," he admits.

WATCH: Gisele Bundchen and Tom Brady's Personal Chef Reveals Couple's Strict Dietary Demands

Bundchen also assists him with his diet, which does not include a certain fruit.

"I've never had a strawberry in my life. Can you imagine that?" Brady reveals. "It's just not a thing I like."