
Andy Roddick reacts after beating Australia's Bernard Tomic in the third round of play at the 2012 US Open tennis tournament, Friday, Aug. 31, 2012, in New York. (AP Photo/Charles Krupa)

Andy Roddick reacts after beating Australia's Bernard Tomic in the third round of play at the 2012 US Open tennis tournament, Friday, Aug. 31, 2012, in New York. (AP Photo/Charles Krupa)

Victoria Duval, left, congratulates Kim Clijsters, of Belgium, on her 6-3, 6-1 win in the first round of play at the U.S. Open tennis tournament, Monday, Aug. 27, 2012, in New York. (AP Photo/Charles Krupa)

New England Patriots tight end Aaron Hernandez (81) during an NFL football training camp in Foxborough, Mass., Friday, Aug. 17, 2012. (AP Photo/Charles Krupa)

New England Patriots tight end Aaron Hernandez (81) during an NFL football training camp in Foxborough, Mass., Friday, Aug. 17, 2012. (AP Photo/Charles Krupa)

New England Patriots tight end Rob Gronkowski (87) during an NFL football training camp in Foxborough, Mass., Friday, Aug. 17, 2012. (AP Photo/Charles Krupa)

New England Patriots tight end Rob Gronkowski (87) during an NFL football training camp in Foxborough, Mass., Friday, Aug. 17, 2012. (AP Photo/Charles Krupa)

United States' Kevin Durant, Carmelo Anthony, LeBron James and Kobe Bryant celebrate the men's gold medal basketball game at the 2012 Summer Olympics, Sunday, Aug. 12, 2012, in London. (AP Photo/Charles Krupa)

United States' Kevin Durant, Carmelo Anthony, LeBron James and Kobe Bryant celebrate the men's gold medal basketball game at the 2012 Summer Olympics, Sunday, Aug. 12, 2012, in London. (AP Photo/Charles Krupa)