San Diego Chargers receiver Keenan Allen (left) can’t avoid  Seattle Seahawks safety Earl Thomas. Photograph: Paul Buck

Defending Super Bowl champions the Seattle Seahawks experienced a surprise 30-21 loss to the San Diego Chargers while Peyton Manning led the Denver B(...)

Carolina Panthers’ Greg Hardy closes in on  Drew Brees (No 9) of the New Orleans Saints during the clash at the America Stadium in Charlotte, North Carolina. Photo: Streeter Lecka/Getty Images

The Carolina Panthers, New England Patriots and Cincinnati Bengals all clinched play-off spots as the National Football League playoff picture came in(...)

Washington Redskins quarterback Robert Griffin III with the team banner. Photograph: Gary Cameron/Reuters

The radio ads started last Sunday to coincide with the team’s first game of the NFL season, the American football league, the following night. “That w(...)

Jason Collins used to joke that he chose the 98 shirt number when he signed for the Boston Celtics to “mess with refs when they called me for fouls” but the player said this week he had picked the number to mark the year Matthew Shepard, a gay student at the University of Wyoming, was killed. Photograph: Bruce Bennett/Getty Images

Just weeks after the US Supreme Court heard landmark arguments for and against gay marriage, America was gripped this week with the disclosure (...)