Every spring, WWE puts on the biggest show of the year — WrestleMania. It's one of the main reasons the WWE still exists today, and each iteration of the pay-per-view tries to up the ante.

WrestleMania XXXI will be no different, featuring what could be some of the best matches of the entire year.

So without further ado, here's a look at every match confirmed for WrestleMania XXXI thus far.

Brock Lesnar vs. Roman Reigns

The World Heavyweight Championship

It's the main event, and it doesn't get much bigger than this: Roman Reigns, winner of the 2015 Royal Rumble match, will go one-on-one with "Beast Incarnate" Brock Lesnar for the WWE World Heavyweight Championship.

Rusev vs. John Cena

The United States Championship

It's a rematch from WWE Fastlane. U.S. Champion Rusev remains undefeated, but can John Cena, the Superman of WWE, finally bring that reign to an end?

Bad News Barrett vs. Dolph Ziggler vs. R-Truth vs. Dean Ambrose vs. Luke Harper vs. Stardust vs. Daniel Bryan

The Intercontinental Championship

The only thing a successful WrestleMania really needs is a good ladder match, and the fight for the Intercontinental Championship is set to feature seven of the best athletes the WWE has to offer. It just doesn't get much better than that.

Sting vs. Triple H

This is the match that fans have dreamed of for years — the face of WCW is set to take on the leader of the WWE itself. Could Sting's first match in the WWE actually be his last? Yes, especially if Triple H has anything to do with it...

Seth Rollins vs. Randy Orton

It's the future of the WWE vs. the Apex Predator. This is a fight four months in the making, and considering how brutally Seth Rollins took out Randy Orton, it's clear that the Viper is in this for more than the win — this is revenge.

Bray Wyatt vs. The Undertaker

The Streak may have been broken, but that doesn't mean the Undertaker is done yet. Bray Wyatt may claim to be the rightful heir to the throne, but the Deadman isn't about to roll over and let him take it.

AJ Lee and Paige vs. The Bella Twins

Sure, AJ Lee and Paige aren't the most conventional pair of divas in history, but that doesn't mean they're pushovers, either. The feud between the duo and the Bella Twins has been building for months, so expect a real slugfest at WrestleMania.

Andre the Giant Memorial Battle Royal

It was the match that put Cesaro on the map, and the Andre the Giant Memorial Battle Royale is set to return to WrestleMania. While there are still some open slots left to fill, the roster is already full of heavy hitters like Kane, Big Show, Ryback and Mark Henry, among others.

As always, Wrestlemania is set to be the biggest WWE event of the year. The return of the Undertaker is enough to get fans excited, but they can also look forward to a WWE World Heavyweight Championship match, a ladder match, and last but not least — Sting's official WWE debut.

WrestleMania XXXI will air March 29 on the WWE Network and pay-per-view.

Photo: Randall Chancellor | Flickr
Additional Photos: WWE

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