Dan Serafini is a former professional baseball player who played as a pitcher in Major League Baseball (MLB) for several teams during his career. He was born on January 25, 1974, in San Francisco, California, and attended Junipero Serra High School in San Mateo, California.

Serafini was drafted by the Minnesota Twins in the first round of the 1992 MLB draft, and he made his MLB debut with the team in 1996. He played for the Twins for two seasons before being traded to the Chicago Cubs in 1998. He played for the Cubs for one season before being traded to the San Diego Padres in 1999.

After playing for the Padres for one season, Serafini was traded to the Cincinnati Reds in 2000. He played for the Reds for two seasons before being traded to the Pittsburgh Pirates in 2002. He played for the Pirates for one season before being traded to the Minnesota Twins again in 2003.

Serafini played for the Twins for one season before being traded to the Colorado Rockies in 2004. He played for the Rockies for one season before being traded to the Boston Red Sox in 2005. He played for the Red Sox for one season before being released in 2006.

Serafini then played for several minor league teams before being signed by the Los Angeles Dodgers in 2007. He played for the Dodgers for one season before being released in 2008.

Throughout his career, Serafini had a record of 15 wins and 16 losses, with an earned run average (ERA) of 6.04. He also had 174 strikeouts and 129 walks.

Serafini's career was not without controversy. In 2007, he was suspended for 50 games for violating MLB's drug policy. He later admitted to using performance-enhancing drugs during his career.

Despite his struggles, Serafini remains a respected figure in the baseball community. He has since become a coach and mentor to young players, and he continues to be involved in the sport he loves.