Ronda Rousey vs. Holly Holm
It is hard to bet an expert ground tactician who has never lost and finished all of their opponents even if they are facing a expert standup artist. Rousey is unbeatable at this point and even if she losses, it is not holm to do it. Rousey by submission in the first round.
Joanna Jędrzejczyk vs.. Valérie Letourneau
Letourneau is a good fighter, but there has been nothing that she has done to prove that she can beat the current champion. Sorry but a win over a TUF runner up and a fighter with one fight int he UFC should not warrant a title shot. Joanna should be facing off with Claudia Gadelha, but that fight is not possible. Jedrzejczyk by TKO in the 4th round.
Mark Hunt vs. Antonio Silva
Yes, the first fight ended without a TKO, but now that Silva has been off TRT his chin has not quite held up. Since returning from his suspension, he has been knocked out in the first round twice and nearly knocked out in his only win. Yes, Hunt was knocked out as well, but that only happened to to being kneed in the head and being beaten pillar to post by Stipe Miocic. he first fight will not be repeated here. Hunt by KO in the 1st round.
Robert Whittaker vs. Uriah Hall
Yes, a lot of people are going to put stock in Hall after his huge win over Gegard Mousasi, but it was just that, a huge win. He has done this before, but this is a fighter that is notoriously inconsistent. Hall has failed to push the pressure and been beaten by the likes of John Howard and Rafael Natal. Sorry to say, but the young and hungry Whittaker is not going to be easy to beat. Hall may be a karate master, but Whittaker himself holds multiple black belts in the same martial art. Whittaker by decision.
Stefan Struve vs. Jared Rosholt
Struve may not be the fighter he was before he left due to his heart failure, but he is one of the most dangerous fighters and after going through what he went through it will take time to be 100%. He fought Overeem for his fight back and that is tough while he took out Big Nog in his last fight. Even if the fight hits the ground, Struve has some of the best guard work in the Heavyweight division. Plus, with his range it will be hard for Rosholt on the feet. Struve by submission in the second round.