sentences:  He made his major league debut on April 4, 2007 and pitched in one third of an inning while walking three.On April 8, 2007, Burton was placed on the disabled list after straining a hamstring running in the outfield.Burton was sent to both Triple-A Louisville and Double-A Chattanooga on a rehab assignment and had a combined 1–1 record with a 6.23 ERA.