A brutally slow event pace, a bizarre, controversial co-main event, and a title fight ended prematurely by a shoulder injury; all in all, the UFC's fourth journey into Rio de Janeiro didn't exactly pan out as anticipated. Though none of that matters now.

Yes, ladies and gentlemen, UFC 163 is in the books. Phil Davis is light heavyweight's new upstart contender, and Jose Aldo remains entrenched atop the UFC featherweight throne. Chan Sung Jung's fourth-round dislocation may have been a strange but fitting ending to an already weird night, but it provided plenty of material for the mixed martial arts community to debate on Twitter.

That is brutal that Zombie's shoulder pops out during the fight!!!!! — Dana White (@danawhite) August 4, 2013

Noooooooooooooooooooooo — BuddhaHood (@vaughanlovelee) August 4, 2013

Ohhhh man — TJ Grant (@TJ_Grant) August 4, 2013

I feel ur pain Korean zombie :( hope ur gonna be okay God bless U. 🙏 @ufc — Manny Gamburyan (@MannyGamburyan) August 4, 2013

What a shitty way to lose. #ufc163 — John Dodson III (@JohnDodsonMMA) August 4, 2013

Wow that is real unfortunate man. Hell of a fight hate to see it go that way. — Erik Jon Koch (@NEWBREED04) August 4, 2013

That sucks the fight was really getting good. Hope the Zombie is ok. This game is unpredictable — The Diamond (@DustinPoirier) August 4, 2013

Zombie's loopy overhand right dislocates his own shoulder. Crazy! Aldo defends belt again. #ufc163 — Kenny Florian (@kennyflorian) August 4, 2013

Why the heck wasnt Aldo throwing anything? Such a weird fight. — Ben Askren (@Benaskren) August 4, 2013

Oh man that sucks KZ. Shoulder popped right out. Yuck. — Stipe Miocic (@smiocic) August 4, 2013

Kind of anti climatic. .got to feel bad for zombie after a year lay off. Congrats to the champ @josealdojunior — Mike Brown (@mikebrownmma) August 4, 2013

Well that shoulder ruined the fight #power #revival — mark richard hunt (@markhunt1974) August 4, 2013

Weird ending to a strange fight! Neither fighter fought the way we thought — Louis Gaudinot (@LouGaudinotUFC) August 4, 2013

That was a real bummer way for a warrior like The Korean Zombie to go out even tho he wasn't winning the fight #ufc163 — Patrick Healy (@BamBamHealy) August 4, 2013

Wow! That was rough. I know what it feels like to dislocate in a fight. Ugh. No fun. — Cody Donovan (@donnybrookcody) August 4, 2013

That ending fucking sucked. Not hating on either guy just the injury ruined what could've been an interesting 2 rounds. :( #UFC163 — Yves Edwards (@thugjitsumaster) August 4, 2013

That's a horrible end to a fight feel horrible for @KoreanZombieMMA idk if @josealdojunior finishes him if he doesn't separate the shoulder — Will Brooks (@illwillbrooks86) August 4, 2013

Not the strongest ppv card tonight. thank god ufc 166 is stacked. @ufc — Diego Sanchez UFC (@DiegoSanchezUFC) August 4, 2013

CONTROVERSY IN BRAZIL

Wow!!! I had Machida winning all 3 rds but that's what happens when u leave it up to the judges! — Dana White (@danawhite) August 4, 2013

Shocked but I give it to @PhilMrWonderful he did push the fight and go after it and try to make something happen. — Demetrious Johnson (@MightyMouseUFC) August 4, 2013

Dang I don't know if Phil won but he is way improved from the Evans fight. Few more fight and he will be ready to challenge! — Ben Askren (@Benaskren) August 4, 2013

Phil Davis! Close fight but thought he pulled it off. Smart strategy. Thought Phil won rounds 1 & 2. Shaking up 205 rankings! #ufc163 — Kenny Florian (@kennyflorian) August 4, 2013

Remind me what Machida did again? "@theWoodWDE: @kennyflorian Dude. Machida won all 3 rounds and it wasn't close..." — Kenny Florian (@kennyflorian) August 4, 2013

Wow I don't agree with that decision at all — John Alessio (@johnalessio79) August 4, 2013

Wow. First 2 rounds were real close. But of course I disagree. No damage done with tds — TJ Grant (@TJ_Grant) August 4, 2013

With that being said machida needs to put stamp on his opponents and force the action more to avoid calls like this — TJ Grant (@TJ_Grant) August 4, 2013

Not for nothing Phil Davis is awesome but that's some BS!!! They award to much for TD's even though no damage is done on the floor! Booooo — Matt Serra (@MattSerraUFC) August 4, 2013

Rounds 1& 2 were razor sharp close with @PhilMrWonderful scoring the late takedowns. I'm surprised he got the decision in Brazil, but happy! — joey beltran (@mexicutioner760) August 4, 2013

Neither @lyotomachidafw or @PhilMrWonderful won it should have been a Draw — Will Brooks (@illwillbrooks86) August 4, 2013

Wow! How do 2 takedowns at the end of the round win you a fight?!?! Damn! — Krzysztof Soszynski (@KSOSufc) August 4, 2013

Guys was a close fight. No one landed many strikes. Turn the volume down and watch the fight and it won't be as obvious. — Daniel Cormier (@dc_mma) August 4, 2013

And before we get to the main event. Let's remember how many of these fights lyoto have won. Shogun 1, hendo come to mind. Lyoto is a stud. — Daniel Cormier (@dc_mma) August 4, 2013

I woulda scored it 30-27 for Machida. #ufc163 — Patrick Healy (@BamBamHealy) August 4, 2013

Close one.. I had it 29-28 davis but i think the scorecard s will be all over the place — Mike Brown (@mikebrownmma) August 4, 2013

Very close fight. Thought Machida should’ve gotten it but very close. — Marcelino Evil (@KCBanditMMA) August 4, 2013

"@Santanacrooks: Phil won rd 1 & 2 with the takedowns machida got rd 3" agreed — Scott jorgensen (@Scottjorgensen) August 4, 2013

huh? Thought for sure the judges would give it to Machida in Brasil. The Reverse Hometown Decision. — Tom Lawlor (@FilthyTomLawlor) August 4, 2013

Brazilian commentators had Davis winning rounds 1 & 2. So shhhhhhhhhhh #UFC163 — Kenny Florian (@kennyflorian) August 4, 2013

Scorecard for Machida vs Davis pic.twitter.com/3vr2VpDSG2 — E. Casey Leydon (@ekc) August 4, 2013

MUTANTE ROLLS

Congrats to @cezarmutante, submission of the night candidate for sure @blackzilians, great fight and awesome finish — Alistair Overeem (@Alistairovereem) August 4, 2013

Another awesome submission!!! U can tell he pulled that move off 100 times in training...very nice!! — Matt Serra (@MattSerraUFC) August 4, 2013

Rocking them with strikes is one of the best set ups for a sub. #mma #AC4FIGHTPARTY #UFC163 @assassinscreed — Joseph Benavidez (@JoeJitsu) August 4, 2013

A SUCCESSFUL RETURN

Leites & Watson performed a wonderful reenactment of "Friday the 13th". #UFC163 #blood — Kenny Florian (@kennyflorian) August 4, 2013

Welcome back to the @UFC @ThalesLeites! Fighting in his hometown of Rio must be an awesome feeling. #AC4FightParty — Urijah Faber (@UrijahFaber) August 4, 2013

Walking dead octagon edition #ufc 163 — Demetrious Johnson (@MightyMouseUFC) August 4, 2013

Good to see @thalesleites back in the octagon ! — TJ Grant (@TJ_Grant) August 4, 2013

Watson is a warrior! — Cody Donovan (@donnybrookcody) August 4, 2013

Better luck next time @TomKongWatson showed a lot of heart. — michael (@bisping) August 4, 2013

THERE WILL BE BLOOD!!!! #UFC163 — Stipe Miocic (@smiocic) August 4, 2013

FLYWEIGHT FUN

Linekar weathers the low blow storm and gets the finish! #AC4FIGHTPARTY #UFC163 @assasinscreed — Joseph Benavidez (@JoeJitsu) August 4, 2013

I can't wait to fight again. I wouldn't mind throwing down with lineker #ufc163. @ufc — John Dodson III (@JohnDodsonMMA) August 4, 2013

PEROSH STUNS VINNY

Perosh was a 5-1 underdog and 25-1 for him to win by KO in the 1st round. Who took that bet?!? — Dana White (@danawhite) August 4, 2013

Holy crap balls wasn't expecting that — isaac vallie-flagg (@IKEVF) August 4, 2013

Oh shit!!!! Lol that was awesome! — Erik Jon Koch (@NEWBREED04) August 4, 2013

What! ?! I didn't see that coming at all! #ufc163 — John Dodson III (@JohnDodsonMMA) August 4, 2013

Fans be like "go Vinny" ..... Turns around from grabbing their drink . "Are you serious" #UFC163 — Derek Brunson (@DerekBrunsonMMA) August 4, 2013

Really?!? — John Alessio (@johnalessio79) August 4, 2013

Sweet guard pull! — Ben Askren (@Benaskren) August 4, 2013