The NFL began allowing players to wear Guardian Caps in regular-season games last year. Here's what to know about the ...

During Tuesday's practice, video showed a live rep for the Chiefs' offense against the defense. Patrick Mahomes took the snap ...

Toronto Blue Jays star George Springer collapses after taking a 96 mph fastball to the head. Fans and teammates held breath ...

Here are three things to watch for at the Steelers first padded practice. The offensive and defensive lines have gone at it ...