Rey Mysterio had fought at 6 WrestleManias .
Rey Mysterio had his first taste of the grandest stage of them all at WrestleMania 19 in a match against Matt Hardy for the WWE 's version of the Cruiserweight Championship .
Rey Mysterio had fought at 6 WrestleManias , and had his first taste of the grandest stage of them all at WrestleMania 19 in a match against Matt Hardy for the WWE 's version of the Cruiserweight Championship .