The Woodlands High School football player Grant Milton had emergency surgery Saturday after suffering a brain injury during his team's playoff game. According to The Washington Post, he is in a coma.

On Wednesday, Texans star J.J. Watt decided to donate $10,000 to support Milton. Watt gave the money to Milton's GoFundMe page, writing the following message:

"If there's anything that I can do to help, please let me know. Sending my best wishes to Grant and the entire Milton family."

He also retweeted this:

On Wednesday, Texans coach Bill O'Brien said that he wasn't surprised by Watt's involvement.

"Obviously that doesn't surprise me at all," O'Brien said, via "J.J.'s somebody who cares very much about the community, individual kids. JJ loves high school football. ... And I'm sure he feels horrible about what happened to that young man. And so I think it doesn't surprise me at all. I think for every one story you hear about J.J. doing that, or [any player] doing that, there's probably 10 other stories that you've never heard about. And I think that's what makes it pretty neat."

According to The Washington Post's Marissa Payne, Milton's father provided the following update Wednesday morning:

Miles Milton said Grant, who is breathing with the aid of a ventilator, underwent a CT scan that showed swelling in his son's brain had "mostly abated and the brain is beginning to return to normal size."

"He continues to have some blood near the site of the trauma which is not unusual," Miles Milton added. "There is no active bleeding or signs of clotting."

He continued: "Grant has been taking tiny steps each day . . . [but] it is still too early to tell what impact the injury had on his brain stem and brain function overall. . . . You never think something like this can happen to your child, especially someone as strong, athletic and outgoing like Grant."

As of 5:49 p.m. ET Wednesday, the GoFundMe raised $85,879 of its $121,000 goal, which will "help his family with medical costs as well as living expenses during this time."