Article Photos: Oklahoma City RedHawks, Houston Astros extend working agreement another two years 1/1

MINOR LEAGUE BASEBALL: Players stand during the national anthem before the 2012 opening day baseball game between the Oklahoma City RedHawks and the Memphis Redbirds at the Chickasaw Bricktown Ballpark in Oklahoma City, Thursday, April 5, 2012. Photo by Nate Billings, The Oklahoman