ABC News March 25, 2015

Leah Still's Cancer In Remission, NFL Player Dad Says

WATCH: Doctors Clear Devon Still's Daughter of Any Active Disease

The cancer-stricken 4-year-old daughter of Cincinnati Bengals player Devon Still is in remission, Still announced today.

Doctors diagnosed Leah Still with stage 4 neuroblastoma on June 2, but they told Still today that Leah was in remission, he said on his Instragram account, declaring it the best day of his life.

"After 296 days of day dreaming about what it would feel like to hear the doctors say my daughter is in remission, I finally know the feeling," he wrote. "Funny thing is there is really no way of describing it because I never knew this feeling existed. When I look at my daughter all I can do is smile and hug her."

Devon Still's Daughter Lights Up Fashion Week After Cancer Treatment
Cindy Ord/Getty Images
NFL player Devon Still and his daughter Leah attend the Nike Levi's Kids fashion show at The Salon at Lincoln Center on Feb. 12, 2015 in New York City.

Still, 25, a defensive tackle, had originally been cut from the Bengals roster, but once the team learned his daughter had stage 4 cancer, they resigned him to their practice squad. He has since been placed on the active roster.

Leah underwent surgery and chemotherapy after doctors found a cancerous growth in her abdomen in June, according to The Associated Press.

AP Photo
In this Oct. 5, 2014, file photo, Cincinnati Bengals defensive tackle Devon Still (75) watches the offensive unit perform against the New England Patriots in the second half of an NFL football game in Foxborough, Mass.

Fans have rallied around Leah, who was part of a ceremony in December in which the Bengals presented the Cincinnati Children's Hospital with a check for more than $1 million to go toward pediatric cancer research. She also walked the runway at the New York Mercedes-Benz Fashion Week in February.

Still said today that he's proud of how hard Leah fought and "kicked cancer's butt." He thanked her doctors at the Children's Hospital of Philadelphia, the Bengals, everyone who supported Leah and sent her letters of encouragement over the last year. Leah isn't done with treatment yet, but he said he knows his "little warrior" will power through.

"She has made an impact on me and on the world, at the age of four, that I can only wish to make in a lifetime," he wrote.

WCPO
Leah Still, a 4-year-old battling cancer, flew last night from Philadelphia to Cincinnati to watch her dad play for the Bengals.
@Dev_Still71/Twitter
Devon Still, defensive tackle for the Cincinnati Bengals, has a tea party with his daughter Leah, 4, in this photo posted to his Twitter, Nov. 6, 2014.