Denver, Colorado - Just a day after NFL icon Franco Harris passed away, the league lost another legend in former Denver Broncos running back Ronnie Hillman.

Hillman, a member of two Super Bowl teams including the Broncos' Super Bowl 50 squad, has died of cancer. His family confirmed the tragic news via Instagram on Thursday. He was 31.

"It is with heavy hearts that we announce the passing of our beloved son, brother & father, Ronnie K Hillman Jr.," his family wrote.

"Ronnie quietly and peacefully transitioned today in the company of his family and close friends."

In a separate post, Hillman's family revealed that the Broncos' legend was recently diagnosed with Renal Medullary Carcinoma, a rare but highly aggressive form of cancer that primarily affects young African Americans with sickle cell trait (SCT).

Hillman was a third-round pick by the Broncos in the 2012 NFL Draft at the age of 20, and was one of the youngest players ever selected in recent times.

A product of San Diego State football, the star running back tallied eye-popping numbers. He secured 3,243 yards and 36 touchdowns in just two seasons, foreshadowing the illustrious career he would have in the big league.

While he was barely old enough to legally drink when he took his first snap in the league, his youth didn’t provide any limitations in the NFL world.

Hillman’s most memorable season came in 2015, when the Broncos won Super Bowl 50, posting a team-high of 863 rushing yards, 24 catches out of the backfield, and seven touchdowns.

As the NFL world learned of the news of Hillman's passing tributes came pouring in for the player who touched many on and off the field.

"So sad to hear about Ronnie. 2012 Draft class. Gone too soon. Praying for the entire Hillman family, friends, and teammates. May you Rest In Peace in Heaven." Super Bowl champion and current Broncos quarterback Russell Wilson tweeted.

Hillman's former teammate Omar Bolden shared his devastation: "I lost a brother and a friend…. I am so hurt and heartbroken. Ronnie, I LOVE YOU BRO, YOU WILL ALWAYS BE MY LIL BROTHER!!! May your soul rest in peace. Until we meet again my brotha #RIPRONNIEHILLMAN #PositiveLiving."

The Broncos franchise also took to social media to send their condolences to the Hillman family in a statement:

"Soft-spoken with a warm smile and quiet intensity, Ronnie was drafted by the Broncos in 2012 and grew into a dynamic player and well-respected teammate. He will be fondly remembered by our organization which extends its heartfelt sympathies and condolences to the Hillman family during this difficult time."

In the wake of Ronnie's passing, the Hillman family has requested space and privacy during this uneasy time. The family has also confirmed that more Information will be revealed at a later date.