We already know that reigning Ultimate Fighting Championship (UFC) featherweight titleholder Conor McGregor can defeat former champion Jose Aldo. After all, he did it -- quite convincingly, I might add -- at the UFC 194 pay-per-view (PPV) event back in December.
We do not, however, know if "Notorious" can survive five rounds with Frankie Edgar.
And now we may never know, because McGregor recently said goodbye to mixed martial arts (MMA) and left the fans, as well as "The Answer," robbed of what could have been a featherweight classic. The silver lining to this Irish cloud is that Edgar's rematch with Aldo would no longer be for the interim title.