There is no disputing the impact Rey Mysterio Jr. has had in the world of wrestling.  Conventional pro wrestling (and, to a larger extent, WWE) wisdom says that a guy like Mysterio is destined to hang on the lower and middle portions of the cards. 

However, Rey's incredible in-ring style and trademark flash of personality made him a popular staple in the Mexican wrestling circuit (and later WCW).  But it was Rey's debut in the WWE that made him a true phenom, able to hold his own in a world filled with giants.

We take a look back at his very first match against Chavo Guerrero.