Depends on who you ask.
And it's also hard because generally the players who are the most hated are also the most loved. There are very few players in the history of the game who are universally hated (outside of their team fanbase if it's a team sport obviously). There aren't THAT many Bill Laimbeers out here lol.
And then there's who gets the most consistent hate as well.
For example, LeBron James pretty much gets hated on throughout the year, whether it's basketball season or not. Floyd Mayweather gets plenty of hate too, but boxers are more out of sight out of mind, and unless he has a fight coming up you're not going to hear anybody talk about him on a mainstream, national level, or even on a place like The Coli to be honest. And both of those guys have HUGE fan bases.
Right now, Kaep is probably getting the most hate out there
