Even if you were correct that soccer isn't popular in the US -- and you're not -- it seems incredibly thin, logically speaking, to blame the purported unpopularity on the league/cup system employed. I did nothing of the sort. Soccer is unpopular as a spectator sport here, because Americans find it boring to watch. It's a fringe, niche sport in the U.S. Sorry if that hurts your feelings or whatever, but the numbers are what they are, and the absence of any meaningful national TV deal proves the point. So to make the argument, as others have, that Americans would embrace a multiple-champion setup in baseball because it works in soccer is inherently flawed, because soccer itself hasn't worked in America (at least not as a spectator/fan sport). Tons of kids play soccer, and it's growing like crazy in terms of participation. I get that. But that's not pertinent to this issue. No. Again, you have a serious correlation-causation problem. Because soccer isn't popular here doesn't mean the league/cup system would be unpopular here (though I would not even remotely be in favor of importing it). There are many reasons soccer may not be popular here, and you have shown no nexus between soccer's unpopularity in the US and the league/cup system (I'd posit such nexus would be impossible to prove, as I don't believe most Americans are even aware of the simultaneous domestic cups and leagues). When you say "whatever that sport is doing, the American sporting public ain't buying" and use that for a reason the league/cup system would not work in the US, you are ostensibly saying that "soccer is played with 11 players a side, and soccer hasn't worked in America, so no sport with 11 players a side would work in America." The problem here is not mine. Look someone else pointed to soccer as evidence that a multiple-champion format for baseball would work here. I showed that's flawed logic, and why. In order to establish that premise, you'd want to show an example of a sport that uses that forma and is popular here. Not only is soccer not such an example (because it's not popular), but it's arguably a counter-example (its unpopularity may be due at least in part to the format). Hope this helps.