WWE fans are already excited to watch WrestleMania 31 in 2015. Although the biggest event in wrestling entertainment is still months away, people cannot help but predict the outcome of marquee matchups.

1. Randy Orton vs. Seth Rollins

Cage Side Seats reported that the Viper is set to return to the WWE after filming his second movie "The Condemned 2". The storyline between him and Seth Rollins continues to unfold and it is expected that the two will be battling their way straight into WrestleMania 31.

2. Sting vs. Triple H

There are rumors that Sting will be facing Triple H, instead of The Undertaker, at WrestleMania 31. The Inquisitr reported that after Sting decimated The Authority during his comeback at Survivor Series, it paved the way for a future match against Triple H. Rumors have been circulating that The Undertaker will be retired by the time WrestleMania 31 happens so Triple H would be a more viable opponent for the aging Sting.

3. Brock Lesnar vs. Roman Reigns

As the WWE prepares to remove The Authority from its main storyline, it is also likely to cement Roman Reigns as its next biggest star. International Business Times wrote that reigning WWE heavyweight champion Brock Lesnar will most likely face Reigns in the main event at WrestleMania 31. Other potential challengers for Lesnar include John Cena and Daniel Bryans.

4. Dean Ambrose vs. Brock Lesnar

WWE fans are clamoring for a dream fight between Lesnar and Ambrose. The Lunatic Fringe has the style to be included in the shortlist of potential Lesnar challengers. On the other hand, wrestling fans are also imagining a monster battle between Lesnar and Ryback.

5. The Rock vs. Lesnar

The Rock and Brock were supposed to wrestle in the main event at WrestleMania 30 but The Rock suffered an injury which cancelled the dream fight. There are rumors that The People's Champ might make a return to the ring and may be pitted against Lesnar or Triple H. Either way, it will be a good show.

WrestleMania 31 is slated to open on March 29, 2015 at the Levi's Stadium in Santa Clara, California.