Colin Kaepernick accepts Sports Illustrated's Muhammad Ali Legacy Award

The controversial football player was honored in a surprise showing by Beyonce.

Kaepernick took to the stage and praised Ali as a fighter for social justice and a mentor.

"The footprints he leaves are large," Kaepernick said, "and his life is and has been a multitextured tapestry that is rich in love, wisdom, life lessons and human kindness."

He has yet to be signed by a NFL team since being waived by the 49ers before the 2017 season.