Abner Haynes, a legendary running back for the Kansas City Chiefs, has passed away at the age of 86. The cause of death has not been disclosed. Haynes was a pivotal figure in the early years of the franchise and left a lasting legacy in professional football.Abner Haynes, a legendary running back for the Kansas City Chiefs, has passed away at the age of 86. The cause of death has not been disclosed. Haynes was a pivotal figure in the early years of the franchise and left a lasting legacy in professional football.Abner Haynes, a legendary running back for the Kansas City Chiefs, has passed away at the age of 86. The cause of death has not been disclosed. Haynes was a pivotal figure in the early years of the franchise and left a lasting legacy in professional football.Abner Haynes, a legendary running back for the Kansas City Chiefs, has passed away at the age of 86. The cause of death has not been disclosed. Haynes was a pivotal figure in the early years of the franchise and left a lasting legacy in professional football.Abner Haynes, a legendary running back for the Kansas City Chiefs, has passed away at the age of 86. The cause of death has not been disclosed. Haynes was a pivotal figure in the early years of the franchise and left a lasting legacy in professional football.