Please identify the club baseball and basketball teams that could take a 7 game series from the MLB and NBA champions, or the club American football team that could win a game against the Super Bowl champions. You can't, can you? /Just think of them as the World Club champions in their respective sports. What a dumb reply. The point is they aren't "World Champions" at all, just of their respective league. What a dumb reply. It's obvious that the NBA, NFL, and MLB are the top tiers of their respective sport, world wide. Yeah, there are some decent baseball teams in Japan and Korea, and some decent basketball teams in the European league, but realistically the champions of those leagues wouldn't stand a chance against the champions of the NBA and MLB in a true seven game championship series. The NFL? There aren't even American football teams in other countries that come close to NFL practice squads. The only league that might offer a challenge is the CFL, and technically that's a different game then what the NFL plays. So really, there's no issue with the NBA, MLB, and NFL champions calling themselves the World Champions. They really are the best in the world at their sport. The only major North American league that MIGHT have serious competition is the NHL, with the KHL being their biggest rivals (and even that's very VERY iffy). As far as I know no NHL championship team has refereed to itself as the "World Champion" in quite some time. They just use Stanley Cup Champions. Though to be perfectly honest even the KHL champs would have a hard time taking down the Stanley Cup champs so I wouldn't object if the Stanley Cup champions started to refer to themselves as the World Champions again. Obvious to you maybe, but that doesn't stop it from being inaccurate. Your own examples regarding the CFL and KHL just support my point. You can try to disqualify them with words like "might" and "iffy" but you're just trying to deflect the fact that calling oneself "World Champions" is just wrong. I could go into it deeper but your own examples do my job for me.