Antonio Pierce showed up at Chiefs camp and Raiders fans can’t be thrilled

Pierce’s presence at camp shouldn’t stir any legitimate speculation. NFL franchises will often welcome guests with coaching ties while in camp mode, and Pierce’s connection with Spagnuolo goes back to their days together with the New York Giants. Spags served as his defensive coordinator from 2007-08.

Still, it’s an intriguing sight for Chiefs fans given Pierce’s recent stint as head coach of the Las Vegas Raiders, a hated rival in the AFC West. To see him wearing Chiefs' gear is rather amusing and must grate Raider Nation to see their former coach fraternizing with the enemy.

It's also worth noting that former Raiders coaches seem to have an affinity for hanging with the Chiefs after the fact. Former Raiders head coach Jon Gruden is a good friend of Chiefs head coach Andy Reid and has been in St. Joseph, too, in recent years.

At the moment, Pierce remains a coaching free agent after being let go by Las Vegas in their most recent organizational overhaul. With his extensive experience as both a Pro Bowl player and coach, Pierce would certainly be a solid addition to any staff—not that anyone should expect Spags to make such an overture. The Chiefs already have Rod Wilson and Brendal Daly coaching the team's linebackers.

It's nearly certain that a visit from Pierce is nothing more than a friendly check-in. The Chiefs are open to gaining insight from respected football minds, and Pierce is exactly that. But it is entertaining to think that Raiders fans might be gritting their teeth at the thought of seeing Pierce sport the logo of a winner for once.