Ronnie Hillman died Wednesday, his family announced.

Hillman, the leading rusher for the Super Bowl-winning 2015 Denver Broncos, had been battling a rare form of cancer called renal medullary carcinoma since August.

"It is with heavy hearts that we announce the passing of our beloved son, brother [and] father, Ronnie K Hillman Jr.," Wednesday's statement read in part. "Ronnie quietly and peacefully transitioned today in the company of his family and close friends.

"We as the family, appreciate the prayers and kind words that have already been expressed. We ask that you would give us time to process our feelings as we prepare to lay our precious RJ to rest."

Over five seasons with the Broncos, Minnesota Vikings and Los Angeles Chargers, Hillman tallied 494 carries for 1,976 yards, 12 touchdowns and another 534 yards receiving.