Kansas City Chiefs quarterback Patrick Mahomes  dives into the endzone for a touchdown against the Indianapolis Colts in  the AFC divisional playoff at Arrowhead stadium in Kansas City. Photograph: Larry W Smith/EPA

The stories passed down about the Kansas City Chiefs’ playoff malfunctions might sound apocryphal, as if embellished over a game of telephone, but the(...)

 Quarterback Alex Smith (No 11) of  Kansas City Chiefs takes the field with teammates prior to the game against the Buffalo Bills in Kansas City, Missouri. Photograph: Jamie Squire/Getty Images

Kansas City Chiefs coach Andy Reid is not an impulsive man. He learned at the feet of Mike Holmgren, a coach who could be maddening at times in his de(...)

This is the NFL. Pills, thrills and headaches. For the rest of your truncated life.  Photograph:  Zach Bolinger/Icon Sportswire via Getty Images

It was a Monday night game between the San Diego Chargers and the Arizona Cardinals three years back. At the time, the NFL was dealing with the fall-o(...)

Le’Veon Bell of the Pittsburgh Steelers brakes an attempted tackle against the Cincinnati Bengals at Paul Brown Stadium in Cincinnati, Ohio. Photograph: Andy Lyons/Getty Images

The Pittsburgh Steelers clinched their NFL play-off place with a last-gasp win over the Baltimore Ravens — but reigning champions the Denver Broncos w(...)

In 2011 a dosen former players, including Joe Horn (above) accused the league and its teams of repeatedly administering the painkiller Toradol before and during games. Photograph: John Amis/Pa

US Federal drug-enforcement agents questioned medical-staff members from the San Francisco 49ers and several other teams on Sunday as part of a contin(...)