Ron Santo, who played third base for the Chicago Cubs for 15 years and later joined their broadcast team, died of complications of bladder cancer Thursday night, the Chicago Tribune reported. He was 70.

Santo suffered from juvenile diabetes, which he kept secret even from his teammates. He was loved in Chicago as a great player on a bad team in the 1960s and '70s. He played his final season for the crosstown White Sox in 1974. The Cubs retired the nine-time All-Star's No. 10 after he retired.