It’s hard to overstate how big a deal this weekend’s main event is if you’re a boxing fan. Roman Gonzalez and Juan Francisco Estrada aren’t the biggest stars of the last few years- but that’s because fighters at the lighter weights rarely are. In terms of skill level and achievement, though, they are and have been as good as anyone, fighting it out in shark-tank divisions and coming out on top- and they’ve done a lot to ensure these divisions have far more attention on them than they did previous. They meet here for the third time, looking to settle a rivalry that’s been going on for a decade and put a cap on two legendary careers.