The answer to the crossword for the term 'Big Name in the Diamond Business' is ALOU. Felipe ALOU was a Major League Baseball player and manager who played for the San Francisco Giants, Montreal Expos, and Atlanta Braves. He was also the first Dominican-born manager in Major League Baseball history. After his retirement from playing, he became a successful manager, leading the Expos to three consecutive winning seasons from 1992 to 1994. He was inducted into the Canadian Baseball Hall of Fame in 2003.