![How do weight classes work in MMA? Weigh-in rules, rehydration clauses, catchweights and more | DAZN News US How do weight classes work in MMA? Weigh-in rules, rehydration clauses, catchweights and more | DAZN News US](https://images.daznservices.com/di/library/DAZN_News/4c/41/dustin-poirier-conor-mcgregor-weigh-in-getty-ftr_167f12zplf6jm1miqm3i5hk6sr.jpg?t=784340311)
How do weight classes work in MMA? Weigh-in rules, rehydration clauses, catchweights and more | DAZN News US
![Kenny Florian, Jon Olav Einemo and the 5 Lankiest Fighters by Weight Division | News, Scores, Highlights, Stats, and Rumors | Bleacher Report Kenny Florian, Jon Olav Einemo and the 5 Lankiest Fighters by Weight Division | News, Scores, Highlights, Stats, and Rumors | Bleacher Report](https://cdn.bleacherreport.net/images_root/slides/photos/001/000/695/Hill_original.jpg?1307629637)
Kenny Florian, Jon Olav Einemo and the 5 Lankiest Fighters by Weight Division | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
![MMA: Understanding Weight-Related Issues | News, Scores, Highlights, Stats, and Rumors | Bleacher Report MMA: Understanding Weight-Related Issues | News, Scores, Highlights, Stats, and Rumors | Bleacher Report](https://cdn.bleacherreport.net/images_root/slides/photos/000/728/172/98076123_original.jpg?1297833300)
MMA: Understanding Weight-Related Issues | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
![Kenny Florian, Jon Olav Einemo and the 5 Lankiest Fighters by Weight Division | News, Scores, Highlights, Stats, and Rumors | Bleacher Report Kenny Florian, Jon Olav Einemo and the 5 Lankiest Fighters by Weight Division | News, Scores, Highlights, Stats, and Rumors | Bleacher Report](https://cdn.bleacherreport.net/images_root/slides/photos/001/000/664/kenny-florian1_original.jpg?1307561245)
Kenny Florian, Jon Olav Einemo and the 5 Lankiest Fighters by Weight Division | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
![Manager: Conor McGregor 'appears to be a lot happier' at welterweight but he's not done at 155 - MMA Fighting Manager: Conor McGregor 'appears to be a lot happier' at welterweight but he's not done at 155 - MMA Fighting](https://cdn.vox-cdn.com/thumbor/SFz4-te_cXV3MmL7nuhM4QAyAl4=/0x0:2880x1920/1200x800/filters:focal(1148x150:1608x610)/cdn.vox-cdn.com/uploads/chorus_image/image/66246640/137_Conor_McGregor.0.jpg)