Marvin Lee Hudson is an American Major League Baseball (MLB) umpire who began his career in the National League in 1998. He has officiated in the 2004 All-Star Game, eight Division Series, two League Championship Series, and two World Series. He wears uniform number 51.

The 2004 Major League Baseball All-Star Game was the 75th edition of the midseason exhibition baseball game between the all-stars of the American League (AL) and National League (NL), the two leagues comprising Major League Baseball. The game was held on July 13, 2004, at Minute Maid Park in Houston, Texas, the home of the Houston Astros of the National League. The game resulted in the American League defeating the National League 9–4, thus awarding the AL home-field advantage in the 2004 World Series.