10 Wrestlers Who Didn't Fit The Belt
10. Rey Mysterio - World Heavyweight Championship
Rey Mysterio was definitely a deserving World Champion, but it is perhaps one of the more peculiar features of pro-wrestling that it only matters if you win a world heavyweight championship. Anything under the full heavyweight level, such as a world light-heavyweight championship, doesn't count apparently.
When Mysterio won his first World Heavyweight Championship, it was due to a somewhat controversial and exploitative story line regarding Eddie Guerrero, who had recently passed away. He was the second entrant in the 2006 Royal Rumble and won, lasting 62 minutes, setting a record for the longest time in the match during the process.
Shortly after, he would end up losing the title shot to Randy Orton at No Way Out, but Teddy Long intervened and added him to the WrestleMania match anyway. He was ultimately victorious and became World Heavyweight Champion, holding the title for 112 days before losing it to King Booker. He would have a second run with the title in 2010 when he defeated Big Show, CM Punk, and champion Jack Swagger at the Fatal 4-Way Pay Per View, but this reign lasted a much shorter 28 days.
At 175lbs, Rey Mysterio doesn't even come close to being a heavyweight, he isn't even anywhere near the traditional cruiserweight maximum of 220lbs, or the current WWE limit of 205lbs. Of course, being as size conscious as they are, this minor detail wasn't lost on WWE management, and during the times when Rey was champion, they dropped the 'Heavyweight' part and just called it the World Title. Problem solved!