Americo Peter "Rico" Petrocelli is an American former professional baseball player and minor league manager. He played his entire Major League Baseball (MLB) career as a shortstop and third baseman for the Boston Red Sox, where he established himself as a fan favorite for his powerful hitting and his solid defensive play. A two-time All-Star shortstop, Petrocelli appeared in two World Series with the Red Sox. He was inducted into the Boston Red Sox Hall of Fame in 1997.

The 1967 World Series was the championship series of Major League Baseball's (MLB) 1967 season. The 64th edition of the World Series, it was a best-of-seven playoff between the American League (AL) champion Boston Red Sox and the National League (NL) champion St. Louis Cardinals. In a rematch of the 1946 World Series, the Cardinals won in seven games for their second championship in four years and their eighth overall. The Series was played from October 4 to 12 at Fenway Park and Busch Memorial Stadium. It was the first World Series since 1948 that did not feature the Yankees, Dodgers, or Giants.