The annual "WWE SummerSlam" for the year will be held on Sunday, which means that a lot of new predictions for the matches are currently circulating online. 

Early this week, USA Today revealed that the host for 2015 WWE SummerSlam is the recently-retired "The Daily Show" host Jon Stewart. This will be his first major hosting gig after he left the show on Aug. 6.

Stewart is a self-confessed pro-wrestling fan, and he was involved in a spat with WWE heavyweight champion Seth Rollins back in March after the veteran host taunted the wrestler online. This led Rollins to storm into Stewart's studio. The two patched things up inside the WWE ring during one of the episodes of Monday Night Raw. 

Stewart and Rollins will be reunited at the Barclays Center on Sunday, where the WWE champ will face John Cena for a Winner Takes All match to vie for the WWE United States Championship and World Heavyweight Championship belts. This will be one of the main events for the 2015 WWE SummerSlam.

Based on predictions, Rollins will retain his World Heavyweight Championship title and take away Cena's WWE States Championship honors. 

The other main event will feature the match between The Undertaker and Brock Lesnar. This will be The Undertaker's opportunity to make Lesnar pay for breaking The Streak. But based on the predictions posted online, the former UFC champion will prove that The Undertaker deserves to lose. 

Other matches for the 2015 WWE SummerSlam and their predicted winners include:

• Bray Wyatt And Luke Harper vs. Roman Reigns And Dean Ambrose - Prediction: Roman Reigns and Dean Ambrose

• Kevin Owens vs. Cesaro - Prediction: Kevin Owens

• Randy Orton vs. Sheamus - Prediction: Sheamus

• Dolph Ziggler vs. Rusev - Prediction: Rusev

• Team Bella vs. Team B.A.D. vs. PCB (Three Team Elimination Match) - Prediction: PCB

• Ryback vs. Big Show vs. The Miz (Intercontinental Championship Triple Threat Match) - Prediction: Ryback

• The Prime Time Players vs. Los Matadores vs. The Lucha Dragons vs. The New Day (WWE Tag Team Championship Match) - Prediction: The Prime Time Players

Meanwhile, "Arrow" actor Stephen Amell will team up with Neville to face Stardust and King Barrett. Based on predictions, Neville's strength coupled with the Arrow's supernatural powers will defeat Barrett and Stardust.

The sold-out 2015 WWE SummerSlam is scheduled on Aug. 23.