Rusev debuted in January at the Royal Rumble and remains undefeated. WWE are good at that initial undefeated push, it just tends to fall apart once theyve lost. So they need to be careful with the U.S. Champion. Reports say that with Brock Lesnar vs Roman Reigns and Sting vs Triple H pencilled in for WrestleMania 31, John Cena may fight for America by taking down Rusev. This would be huge for Rusev but it would be far better if WWE officials gave him the victory. Cena is bullet-proof but Rusev could become a star with this. The Bulgarian Brute (who is sympathetic to Russia) will be desperate for a festive treat from Santa.