Scott Matthew Olsen (born January 12, 1984, in Kalamazoo, Michigan) is a Major League Baseball starting pitcher for the Washington Nationals.
Olsen was born in Kalamazoo, Michigan. He spent his middle school years in Stevensville, MI, and attended Lakeshore Middle School then attended Crystal Lake South High School in Crystal Lake, Illinois, for high school where he was all-conference in baseball. He was drafted 173rd overall during the sixth round of the 2002 Major League Baseball Draft by the Florida Marlins.
Olsen played his first season in the MLB in 2005 with the Florida Marlins. The team activated him on June 25, 2005, when pitcher Josh Beckett went on the disabled list. Olsen had one win and one loss in five starts, with a 3.98 ERA during the season, but was also later sent to the disabled list with an elbow injury.