Last October, Robertson signed an honorary contract with the Saints in a Good Morning America segment that featured Brees and head coach Sean Payton. More recently, he crashed the NBA's All-Star Weekend festivities, and he stole the show in interviews with Russell Westbrook and Draymond Green
On April 30, Robertson's father, Jordy, shared the news that his son had successful surgery.
Last year, Jordy established a GoFundMe page to help pay for his son's medical expenses. The total donations recently jumped to $30,000 with a $8,390 contribution from Brees.
"Keep inspiring us all, JJ!" Brees wrote in a note alongside the donation.
Per ESPN.com's Mike Triplett, who tweeted a screenshot of Brees' donation, Robertson has biliary atresia, a chronic disease that affects his growth. He has spent his life in and out of hospitals and had his first liver transplant when he was one.