Robb Nen was a professional baseball player who played as a relief pitcher for various teams in the Major League Baseball (MLB). He was born on November 28, 1969, in San Pedro, California, and grew up in Southern California. Nen attended Los Alamitos High School, where he played baseball and football. He was drafted by the Texas Rangers in the 32nd round of the 1987 MLB draft but did not sign with the team.

Nen attended Golden West College in Huntington Beach, California, where he played baseball for two years. He was then drafted by the Cleveland Indians in the 32nd round of the 1989 MLB draft and signed with the team. Nen played in the minor leagues for the Indians for three years before making his MLB debut with the team in 1993.

Nen played for the Indians for two seasons before being traded to the Florida Marlins in 1995. He played for the Marlins for three seasons and was a key member of the team that won the 1997 World Series. Nen was named the National League Championship Series Most Valuable Player (MVP) that year after recording three saves and a win in the series.

After the 1997 season, Nen was traded to the San Francisco Giants, where he played for six seasons. He was one of the best closers in the league during his time with the Giants and recorded 206 saves for the team. Nen was named to three All-Star teams while playing for the Giants and helped the team reach the World Series in 2002, although they lost to the Anaheim Angels in seven games.

Nen's career was cut short by injuries, and he retired from baseball in 2004. He underwent three surgeries on his throwing shoulder during his career and was forced to retire at the age of 33. Despite his short career, Nen was one of the most dominant relief pitchers of his era and was known for his fastball, slider, and splitter.

Nen finished his career with a record of 45-42, 314 saves, and a 2.98 earned run average (ERA). He was named to three All-Star teams and won the Rolaids Relief Man Award in 1998 and 2000. Nen was also known for his postseason success, recording 16 saves and a 0.87 ERA in 25 postseason appearances.

In conclusion, Robb Nen was a dominant relief pitcher who played for various teams in the MLB. He was a key member of the Florida Marlins team that won the 1997 World Series and helped the San Francisco Giants reach the World Series in 2002. Nen's career was cut short by injuries, but he was one of the most dominant relief pitchers of his era and was known for his fastball, slider, and splitter.