Conor McGregor's historic victory over lightweight champion Eddie Alvarez has left more questions than answers, with the UFC's first simultaneous two-division champion's impending fatherhood perhaps throwing two divisions into chaos.
Alvarez was supposedly meant to be a tough ask for the Irishman but it quickly became apparent the Philadelphia native shouldn't have been in the same Octagon as McGregor, whose laser cannon of a left hand found the mark at will, dropping the notoriously tough Alvarez three times in the first round.
McGregor was calm and composed, stalking Alvarez in the second round before shutting out his lights with a three-punch combination. It was an almost merciful ending to a fight that was not even close.
It does beg the question though – what does McGregor do next?
He revealed at the post-fight press conference that the worst-kept secret in MMA, his impending fatherhood, may force him to take off more time than usual – he has fought four times in the past 11 months.
Ignoring, for the moment, that he also demanded an equity stake in the UFC, the post-fight presser was more interesting for what McGregor didn't say.
There was no talk of him relinquishing one of the belts, a sticking point between the Irishman and the UFC. No talk of who his next opponent might be, and in what division.
So let's look at the conceivable options.
Welterweight
Welterweight champion Tyron Woodley, who retained his belt in a majority draw with Stephen Thompson that demands an immediate rematch, said he would be interested in a fight with McGregor, but let's be honest and call that what it is – ridiculous.
For all McGregor's attributes, he's not a welterweight and will never be a welterweight. His only welterweight fights, to date, have been against an inflated lightweight in the form of Nate Diaz.
A definitive loss and a razor-thin decision victory don't exactly inspire confidence, no matter how confident McGregor might feel.
Quite frankly, he doesn't have the size or the power to compete with anyone in the top five of the division.
Lightweight
If McGregor chooses to remain at lightweight, which would seem likely, there are three fights that make sense, depending on your perspective.
Last week, Tony Ferguson continued his hot streak, clearly beating former champion Rafael Dos Anjos in Mexico in a performance that had many anointing him as the No.1 contender for the belt.
The former consensus number one, Dagestani wrestler Khabib Nurmagomedov, had fought just once since his 2014 beating of Dos Anjos, a victory over a very game Darrell Horcher in April that was solid without being impressive.
What Nurmagomedov did to Michael Johnson on the undercard of UFC 205 wasn't just impressive. It was brilliant.
After being rocked on the feet early on, Nurmagomedov proceeded to do what he does best. He took Johnson down, tied him up like a pretzel and beat him to a pulp. Johnson was as helpless as a child against the Russian, succumbing to an almost-merciful Kimura in the third round.
That seemingly elevated the wrestler above Ferguson in the rankings, but for my money, a No.1 contender bout between Ferguson and Numagomedov would make perfect sense.
In the meantime, there is only one man that make sense.
Nate Diaz.
Conor may have fought him twice at welterweight, but a fight in Diaz's natural division, for a title, would add a shade more legitimacy to their rivalry.
A rubber match for all the marbles would rake in big money for the UFC, and there's nothing that McGregor – and lately Diaz – like more than big money.
Featherweight
The one knock on McGregor, throughout his career in the UK and now in the UFC, is that he has never defended a belt.
He won the Cage Warriors featherweight title, then immediately the lightweight title, and was promptly whisked off to the UFC.
As anyone will tell you, it's easier to become champion than it is to stay champion, but if he is to defend in the UFC, and one would argue he must, it shouldn't be at featherweight.
If anything, the smart move would be to relinquish the belt and move on.
McGregor looked so natural, so poised at 155 pounds that it's almost impossible to imagine him going down to 145 pounds.
To be frank, he's looked like a skeleton dipped in wax at his past few 145 pound weigh-ins, and that sort of extreme weight cutting simply can't be maintained over a long career.
It's also McGregor's responsibility to provide the fighters in that division with some certainty.
Jose Aldo claimed the interim belt at UFC 200 in July, and there are no shortage of challengers for the once and future king of the division.
Max Holloway and Anthony Pettis are firmly in the mix – Holloway has the most legitimate claim with his last loss coming to McGregor in 2013 – and there are a raft of rising contenders like Yair Rodriguez and Doo Ho Choi looking to cement their place in the top five.
At the moment the division is all at sea, and only the history-making McGregor can right the ship.
Cupcake says farewell
While we're talking about history-making, let's take some time to acknowledge Miesha Tate.
Maybe it was made in the heat of the moment, but Tate announced her retirement after being thoroughly beaten by Raquel Pennington in the opening fight of the UFC 205 main card.
Tate was the hot favourite but she was beaten in every facet by Pennington, who she coached on season 18 of The Ultimate Fighter.
It was Tate's first fight after being defeated for the UFC bantamweight title by Amanda Nunes and to be frank, it's hard to imagine an MMA landscape without Tate, given her legendary rivalry with returning MMA queen Ronda Rousey.
As one of the few women to claim both a Strikeforce and a UFC bantamweight title, she has accomplished all she set out to do in the sport and she will be missed.
Bisping beware
UFC middleweight titleholder Michael Bisping might want to consider if this MMA malarkey is really worth it after seeing Chris Weidman annihilated by Yoel Romero.
The Cuban beast – that's a compliment – unleashed a perfectly time jumping knee that split Weidman open early in the third round and unleashed a torrent of blood from the former champion's skull.
Romero is one of the rare fighters that is dangerous even when he gets tired, and now he is officially the number one contender for Bisping's belt, it seems more and more likely that the Brit's fairytale run will end soon.
Bisping could conceivably push the pace and gas out Romero, who has at times had issues with his cardio, but it is conceivable in the same sense that time travel and alternate dimensions are theoretical possibilities.
Besides, if Romero catches Bisping, he may end up in an alternate dimension.