Jason Johnson was a professional baseball player who played as a pitcher in Major League Baseball (MLB) for over a decade. He was born on October 27, 1973, in Santa Barbara, California, and attended the University of Illinois.

Johnson began his professional career in 1992 when he was drafted by the Pittsburgh Pirates in the 18th round of the MLB draft. He spent several years in the minor leagues before making his MLB debut with the Pirates in 1999. He played for the Pirates for two seasons before being traded to the Tampa Bay Devil Rays in 2001.

Johnson played for the Devil Rays for one season before being traded to the Baltimore Orioles in 2002. He spent four seasons with the Orioles, during which he had some of the best performances of his career. In 2003, he had a career-high 10 wins and a 4.18 earned run average (ERA). In 2004, he had a 4.18 ERA again and a career-high 123 strikeouts.

After leaving the Orioles in 2005, Johnson played for several other teams, including the Detroit Tigers, Cleveland Indians, and Boston Red Sox. He had some success with the Tigers, where he had a 3.99 ERA in 2006 and a 4.54 ERA in 2007. However, his performance declined in his later years, and he struggled with injuries.

Johnson retired from baseball in 2009 after playing for the Seibu Lions in Japan. Over the course of his career, he had a record of 56 wins and 100 losses, with a 4.99 ERA and 758 strikeouts. He also had a reputation as a hard worker and a good teammate.

In addition to his playing career, Johnson was also involved in coaching and mentoring young players. He worked as a pitching coach for the Traverse City Beach Bums in the independent Frontier League and was also involved with the Major League Baseball Players Association's Rookie Career Development Program.

Overall, Jason Johnson had a long and varied career in professional baseball, playing for several teams and experiencing both success and struggles. Despite his challenges, he remained dedicated to the sport and continued to give back to the baseball community even after his playing days were over.