Bill "Mad Dog" Madlock, Jr. (born January 12, 1951 in Memphis, Tennessee) is a former Major League Baseball player. From 1973 to 1987, Madlock was a right-handed hitter who won several National League batting titles. His record of four batting titles as a third baseman would be eclipsed in 1988 by Wade Boggs. Since 1970, only Tony Gwynn has won more National League batting titles (eight). Madlock is also one of only three right-handed hitters to have won multiple National League batting titles since 1960, Roberto Clemente having also won four and Tommy Davis having won back-to-back titles in 1962 and 1963.