#3 Kurt Angle vs. Ken Shamrock
Back in November of 2015, Kurt Angle strongly teased a future fight with ex-WWE Intercontinental Champion and MMA legend Ken Shamrock, and obviously, the fight didn't end up coming to fruition.
While this fight probably would've gotten a lot of attention if it happened outside of WWE, but it would have a lot more interest if it happened under the WWE banner, as they both gained the bulk of their popularity while they were working for Vince McMahon.
Like with the previous entry, both men are similar in age and weight, but the difference is that Ken Shamrock has a lot more experience in the world of MMA compared to Kurt Angle. However, Angle is an Olympic gold medalist, and would probably be able to give Shamrock a heck of a fight if he had enough time to prepare.