Greg Papa returning as 49ers’ voice for Saturday showdown with Seattle

SANTA CLARA — This just in from Greg Papa: “I am doing great.” Because he is, Papa will be back doing play-by-play duties for the 49ers’ radio broadcast of Saturday night’s NFC showdown with the Seattle Seahawks at Levi’s Stadium. Papa, 63, has been on hiatus this season while battling leukemia. He had planned on returning for last Sunday’s 42-38 home win against Chicago but...