Jason Aaron Hammel (born September 2, 1982, in Greenville, South Carolina) is a Major League Baseball pitcher who plays for the Colorado Rockies. He stands at 6 feet 6 inches tall and bats/throws right.
Hammel grew up in the town of Port Orchard, Washington. He attended South Kitsap High School in Port Orchard, Washington and Treasure Valley Community College.
Hammel made his Major League debut on April 11, 2006, against the Baltimore Orioles and got his first victory as a starter on September 2, 2007, against the New York Yankees. On April 5, 2009, he was traded to the Colorado Rockies for pitching prospect Aneury Rodriguez. On October 11, 2009, Hammel started game three of the 2009 National League Division Series against the Philadelphia Phillies. Though he looked strong initially, he ended up allowing four earned runs and the Rockies went on to lose the game.