After Conor McGregor's apparent retirement, fighters step up for UFC 200 -- on Twitter

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With the news of Conor McGregor being out at UFC 200 and apparently retiring via Twitter, reaction came in from all levels of UFC fighters.

Not content to simply share their opinion on McGregor's departure, some fighters decided to volunteer their services for the UFC 200 main event.

It remains to be seen what Dana White and UFC will do with UFC 200, scheduled for July 9 in Las Vegas. As of right now, the UFC's website lists the main event as "To Be Announced" vs. "To Be Determined," with the interim featherweight title fight between Jose Aldo and Frankie Edgar still listed as the co-main event.