OPENING DAY U.S. Marine Corps Sgt. Gabriel Ledesma, left, delivers the game ball to Washington Nationals' opening day starting pitcher Livan Hernandez at Nationals Park in Washington, D.C., March 31, 2011. Ledesma and several other wounded warriors and Iraq and Afghanistan war veterans participated in the Nationals' 2011 season opener against the Atlanta Braves. SHARE IMAGE: Download Image: Full Size (0.06 MB) Photo By: VIRIN: 477131-A-ZUS27-638.jpg Photo Gallery