Mark Bellhorn was a professional baseball player who played for several teams during his career. He was born on August 23, 1974, in Boston, Massachusetts, and attended Oviedo High School in Florida. He was drafted by the Oakland Athletics in the second round of the 1995 Major League Baseball draft.

Bellhorn made his Major League debut with the Athletics in 1997, but he struggled to establish himself as a regular player. He was traded to the Chicago Cubs in 2002, where he had his best season. He hit 27 home runs and had 56 RBIs while playing second base and third base. He also helped the Cubs reach the playoffs for the first time since 1998.

After his successful season with the Cubs, Bellhorn was traded to the Colorado Rockies in 2003. He struggled with injuries and was eventually released by the Rockies. He signed with the Boston Red Sox in 2004 and became a key player in their World Series championship run. He hit a crucial home run in Game 6 of the American League Championship Series against the New York Yankees, helping the Red Sox come back from a 3-0 deficit to win the series.

Bellhorn continued to play for the Red Sox in 2005, but he struggled with injuries and his performance declined. He was traded to the San Diego Padres in 2006, but he was released after just 52 games. He signed with the Cincinnati Reds in 2007, but he was released again after just 19 games.

Overall, Bellhorn played for six different teams during his career. He had a career batting average of .230, with 69 home runs and 221 RBIs. He was known for his ability to draw walks and his versatility in the field, as he played second base, third base, and even some outfield.

After his playing career, Bellhorn worked as a hitting coach for several minor league teams. He also appeared on the reality TV show "Survivor" in 2014, where he finished in 14th place.