Sandy Martinez was a professional baseball player who played as a catcher for various teams during his career. He was born on October 10, 1971, in Villa Mella, Dominican Republic. Martinez began his professional career in 1989 when he signed with the New York Yankees as an amateur free agent. He spent several years in the minor leagues before making his major league debut with the Yankees in 1995.

Martinez played for the Yankees for three seasons before being traded to the Chicago White Sox in 1998. He played for the White Sox for two seasons before being traded to the San Francisco Giants in 2000. Martinez played for the Giants for one season before being traded to the Toronto Blue Jays in 2001. He played for the Blue Jays for two seasons before being traded back to the Yankees in 2003.

Throughout his career, Martinez was known for his strong defensive skills as a catcher. He was also a solid hitter, with a career batting average of .249. Martinez was particularly effective against left-handed pitchers, with a career batting average of .284 against them.

One of Martinez's most memorable moments came during the 2000 season when he hit a game-winning home run in the 10th inning of a game against the Los Angeles Dodgers. The home run helped the Giants clinch the National League West division title.

Martinez retired from baseball in 2004 after playing for the Yankees for one final season. He finished his career with a total of 1,002 hits, 91 home runs, and 437 RBIs. After retiring from baseball, Martinez worked as a coach and instructor, helping to develop young players in the Dominican Republic.

Overall, Sandy Martinez had a successful career as a professional baseball player. He was known for his strong defensive skills as a catcher and his ability to hit left-handed pitchers. Martinez played for several teams during his career, including the Yankees, White Sox, Giants, and Blue Jays. He retired from baseball in 2004 and has since worked as a coach and instructor.