Stanley Camfield Hack (December 6, 1909 – December 15, 1979), nicknamed "Smiling Stan", was an American third baseman and manager in Major League Baseball who played his entire career for the Chicago Cubs and was the National League's top third baseman in the late 1930s and early 1940s. Usually a leadoff hitter, he batted .301 lifetime, scored 100 runs seven times and led the NL in hits and stolen bases twice each. His 1092 walks ranked fourth in NL history when he retired, and remain a franchise record; he also hit .348 over four World Series. His .394 career on-base percentage was the highest by a 20th-century third baseman until Wade Boggs exceeded it in the late 1980s, and was the top NL mark until 2001. Hack led the NL in putouts five times, in double plays three times and in assists