Every Middleweight Boxing Era Explained

0:00 Ketchel-Greb Era 1:42 Zale–Graziano Era. 2:49 Robinson Era 4:21 Post-Robinson Era 6:00 Hagler Era 7:58 Hopkins Era 10:16 Martínez Era 11:45 Golovkin–Álvarez Era 13:57 Riyadh Season Era All of the eras of the middleweight boxing division explained in detail. Boxing explained.