10 WWE Dream Matches That Only Happened Once

10. Rey Mysterio Vs. Rob Van Dam

I'll start with one that might surprise a few people.

Rey Mysterio and Rob Van Dam had a run as tag team champions in late 2004, defeating everyone's least favourite thrown-together team (Kenzo Suzuki and Renee Dupree) for the belts, but they only ever faced off against each other in singles competition one time.

That's once across all promotions, too. That match came in 2006 at a WWE vs. ECW Head-to-Head show, an event headlined by John Cena taking on Sabu. It was a one-off special, and RVD and Rey had the honour of opening the show. RVD picked up the win after a predictably close contest.

I suppose it isn't so surprising that these two didn't face off that much. They were both babyfaces for the pretty much the entirety of their WWE runs, and always seemed to be on opposite brands. They didn't even get a post-tag titles feud, either.