Ronda Rousey mystery hanging over UFC 200

Ronda Rousey. Photo / Getty

It's been a week full of surprises in Las Vegas but has the UFC got one more planned for today?

The rumour mill started to turn its wheels at the UFC 200 weigh-in yesterday after a promotional video hyping the headline bout between women's bantamweight champion Miesha Tate and Amanda Nunes was screened.

"Miesha Tate is the most dangerous female fighter in the world," declared UFC boss Dana White in the short clip.

"Other than Ronda Rousey."

Those extra four words could mean nothing - but they could mean everything. Were they a hint the former champ - who hasn't been seen since her devastating KO defeat against Holly Holm in Melbourne last November - is ready to return?

Many expect Rousey to be in attendance at the T-Mobile Arena today to support her partner Travis Browne, who kicks off the main card in a heavyweight bout against Cain Velasquez.

Dana White reportedly said yesterday she's not coming, but he may also be looking to protect a big reveal after having the announcement of Brock Lesnar's return spoiled at UFC 199.

Dana White also said GSP will be at UFC 200 tomorrow but Ronda Rousey will not. That could be a curve ball though given the Tate/Nunes ME.

— Chamatkar Sandhu (@SandhuMMA) July 9, 2016

Could we see Rousey crash the Octagon after Tate and Nunes do battle to challenge the winner? Is that why the Tate-Nunes fight was strangely moved to the final spot on the card yesterday?

After Jon Jones' stunning removal from the card after testing positive for two banned substances - and the spectacular addition of Brazilian legend Anderson Silva as his replacement - anything seems possible.

At first glance, the decision to put Tate-Nunes as main event seems surprising, but IF a certain Ronda Rousey comes to town, is it? 🤔

— Ariel Helwani (@arielhelwani) July 8, 2016

Whether Rousey is involved or not, it promises to be an historic occasion for the UFC. White may have described the recent chaos as "the worst 24 hours of my 16-year career with the UFC", but he's pulled off a heck of a card.

Brock Lesnar is back in a mouth-watering contest against Kiwi knockout artist Mark Hunt - and while that's perhaps the most eagerly awaited bout, the whole card is stacked with must-see fights.