The crossword solution for the term 'Diamond Surname' is ALOU, a four-letter word. Felipe ALOU was a Major League Baseball player and manager who played for the San Francisco Giants, Montreal Expos, and Atlanta Braves. He was a three-time All-Star and won the National League batting title in 1966. After his playing career, he managed the Montreal Expos from 1992 to 2001 and the San Francisco Giants from 2003 to 2006. He was inducted into the Canadian Baseball Hall of Fame in 2012.