Rivers' son, Austin, who is a reserve guard on the Clippers, posted a photo on Instagram on Friday of himself, his father and his grandfather.
Wrote Austin: "We all loved you and will miss you. But you will always be in our hearts Bettye. May you RIP."
Austin's sister, Callie Rivers, also posted a message to her Instagram account.
Wrote Callie: "rip grandma. i know you will be an angel watching over us all. so thankful to have had you in my life. i love you and miss you already, forever in our hearts. bettye rivers"