The Oakland Raiders and Denver Broncos have taken their AFC West rivalry off the field and on to Twitter this offseason.

It began with a tweet from the NFL linking to a story on Khalil Mack saying the Raiders have the pieces to be "that good" -- with that good referring to Denver's historic 2015 defense. The Raiders Twitter account then mentioned that the Broncos ruled* (*past tense) the AFC West, indicating that its Oakland's time to take over, and the Broncos social media responded back with a crying emoji and a picture of John Elway and co. laughing.

Radio silence followed, but the Raiders finally responded Wednesday afternoon with some quick practice highlights of Mack and Bruce Irvin, who just might end up forming the scariest pass rush duo in the league in 2016 and for years to come.

It's fair to say that the Raiders have a lot to prove before making a claim as the best defense in the NFL, but Mack wasn't wrong when he said Oakland has everything you need to build that kind of unit. We'll see if potential becomes reality, but at least the up-and-coming Raiders are spicing things up when it comes to trash talk on social media.