An already strange day grew even stranger Tuesday night when UFC president Dana White announced on ESPN's Sportscenter that the UFC pulled Conor McGregor from the headlining slot of UFC 200 opposite Nate Diaz for refusing to attend a press conference this week in Las Vegas.

The news came just hours after McGregor abruptly announced his retirement from mixed martial arts with a cryptic tweet, and not surprisingly, McGregor's fellow fighters had plenty to say about the bizarre turn of events. Check out reactions from the pros below.

BREAKING: Conor McGregor will not compete in UFC 200. pic.twitter.com/u7SN5B5ICL — SportsCenter (@SportsCenter) April 19, 2016

Dear Dana,

I'm pretty open July 9th. Have this thing June 18th in Canada. But after that I'm Game the Fuck ON!!! — Cowboy Cerrone (@Cowboycerrone) April 20, 2016

Thats funny because I'll be available to for UFC 200 with a winning streak ! #UfcOttawa

https://t.co/bpXNdRj7TK — patrick cote (@patrick_cote) April 20, 2016

I remember it like it was yesterday when Conor, Rousey and Sage could do no wrong. My oh my how things have changed. WOW — Derek Brunson (@DerekBrunson) April 20, 2016

So it seems the McGregor retirement rumor is true. My thoughts? It's about the ca$h. Goes to UFC wanting more money & they said no. #UFC200 — Josh Barnett (@JoshLBarnett) April 20, 2016

— 'Rowdy' Bec Rawlings (@RowdyBec) April 19, 2016

If Conor is really out I'm sure me and Lawler could put on an epic war for you guys... Jus sayin — Matt Brown (@IamTheImmortal) April 20, 2016

If they will make it the new main event I'll fight an actual rabid animal at UFC200. I want 1/10 of whatever Conor did. — Tom Lawlor (@FilthyTomLawlor) April 20, 2016

I also offer to wear the McGregor tattoos and fight vs Nate Diaz if we can do a catch weight. Hell I'll even get the ACTUAL tattoos for $$$ — Tom Lawlor (@FilthyTomLawlor) April 20, 2016

Really shows the star power of @TheNotoriousMMA sends out one tweet and the world goes crazy! I'm pretty sure you'll see him at #UFC200 — Chad Laprise (@ChadLaprise) April 20, 2016

Negative, sir. If anything, we'll see Conor McGregor Promotions. https://t.co/oLUtyvYZQq — Mike Jackson, Esq. (@TheTruthJackson) April 20, 2016

Contract wise he can't just leave the UFC. The retirement clause is really the only option. https://t.co/AcnSXBn5RE — Josh Barnett (@JoshLBarnett) April 20, 2016

I'll fight Nate! Let me get that!! — The Diamond (@DustinPoirier) April 20, 2016

Does McGregor still get to keep this belt? Dude needs to be stripped asap imo. Pulling stunts to protect brand. Scared to lose again. — Chris Wade (@CWadeMMA) April 20, 2016

Hey @TheNotoriousMMA you want to set up a bareknuckle boxing fight now that you are retired from UFC??? Let me know — Cody McKenzie (@thecodymckenzie) April 20, 2016

Connor Mcgregor,Hope you're buying time to get to 170! U Hav the$ and the right to quit.But happy? Maybe,but not a Champ!Enjoy your Lobster. — Mark Coleman (@HammerHouseMMA) April 20, 2016

If theres is a spot Open on #UFC200 I am ready !!! Any top 10 but I def want #1 contender @JoeJitsu @danawhite @seanshelby @ufc — Wilson Reis (@wilsonreis7) April 20, 2016