Showdowns: The 20 Greatest Wrestling Rivalries of the Last Two Decades

Two decades of the top twenty fan favorites and the matches that made them famous.

It starts with an insult...then comes a push, a shove...a betrayal. Before you know it, the two wrestlers are at each other's throats. It's a rivalry, it's personal...it's a showdown.

Some showdowns are straightforward: John Cena wants to prove himself by taking on JBL; Randy Orton knows that if he can slay Undertaker, it will prove that he is the legend killer. Others are grudge matches -- The Rock is finall...