Dean Ambrose is now the longest reigning U.S. champion in WWE history

It's a historic day in WWE, folks.

That's because Dean Ambrose has now been the United States champion for 344 days (and counting), which makes him the longest reigning U.S. titleholder in WWE history. It should be noted he's not number one overall -- he's got to keep the strap for another 180 days to pass Lex Luger, who was champion for 523 days back in 1989-90.

WWE.com on Ambrose's reign:

Since defeating Kofi Kingston to claim the title at last year's Extreme Rules, Ambrose has survived the challenges of Rob Van Dam, Dolph Ziggler, Kane and many others who have tried to take the title away from him.

Emphasis mine.

There have not been "many others".

In fact, the last pay-per-view (PPV) he defended the U.S. title at was all the way back on Oct. 27, 2013, at the Hell in a Cell event when he lost to Big E -- who was still rocking as Langston at the time -- via countout. He hasn't defended it on TV since early February on Raw, though there was a title defense on Main Event on March 11 on WWE Network.

The best part? Ambrose hardly ever defending the title has become a running joke within The Shield and the reason Ambrose has given is because "there's a lot of paperwork involved".

Believe in paperwork.