No one's certain who will emerge as favorites in the AFC West this season, but the Raiders and Denver Broncos already are acting like heated rivals.
The teams got into a Twitter scuffle Wednesday, according to Associated Press, trading barbs after Khalil Mack wrote that Oakland's defense could be as good as Denver's. An nfl.com headline read, "The (at)Broncos D? It currently rules the AFC West." Responded the Raiders on their official Twitter account, "Ruled(asterisk)". The Super Bowl champion Broncos replied with a photo of general manager John Elway and coach Gary Kubiak leaning back in chairs and laughing.