Brothers Joe (left) and Phil Niekro squared off against one another on July 4, 1967 in a game won by Phil's Atlanta Braves against the Chicago Cubs, 8-3. The Niekro brothers would face each other nine times in their career, with Joe’s team winning five. They hold the record for most combined wins by siblings in a career with 539. BL-1598-92 (National Baseball Hall of Fame Library)