UFC 213 in Las Vegas has undergone a bit of a facelift. 

The July 8 card, which takes place during International Fight Week, officially lost its co-main event on Tuesday after weeks of rumors when Cody Garbrandt pulled out of his bantamweight championship bout against TJ Dillashaw due to a back injury. 

In its place will be a new co-main event as Yoel Romero and Robert Whittaker will meet for a vacant middleweight title while the current champion, Michael Bisping, is sidelined with a knee injury. The card also has its first official main event as a women's bantamweight championship bout between Amanda Nunes and Valentina Shevchenko was bumped atop the marquee. 

UFC confirmed the initial reports from ESPN, as well as news that Dillashaw, a former bantamweight champion, will move down to 125 to challenge flyweight titleholder Demetrious Johnson in August at a card that has yet to be announced. 

Johnson, however, immediately took to social media to dispute the news about Dillashaw. 

Garbrandt (11-0), 25, was sent to Germany earlier this month by UFC to meet with a stem cell specialist. 

"After his last round of treatment in Germany, they told him he'd need four weeks to rest," UFC president Dana White told ESPN. "That would have put him two weeks out from the fight. With Cody out, we're going to make TJ versus 'Mighty Mouse' [Johnson]. That's the plan."

UFC 213 will take place from T-Mobile Arena in Las Vegas, one night after "The Ultimate Fighter 25" finale card at the same arena. 

Romero (12-1), 40, has won eight consecutive fights and was originally on the outside looking in for a title shot when the UFC announced Bisping would defend against former welterweight champion Georges St-Pierre this year upon his return from a retirement of more than three years. But GSP later announced he wouldn't be ready to go until November and UFC changed its plans. 

Whittaker (18-4) essentially jumped an already deep line of title contenders with his April knockout of Ronaldo "Jacare" Souza.

The new UFC 213 main event, Nunes-Shevchenko II, is a rematch of their 2016 non-title bout that was won by Nunes (14-4). But the fact that Shevchenko (14-2) came on late in Round 3 of their fight leads many to believe a five-round rematch could be different. 

While UFC 213 still holds strong depth with fights like Robbie Lawler-Donald Corrine, Alistair Overeem-Fabricio Werdum III and Anthony Pettis-Jim Miller, it now lacks a crossover main event that the company's International Fight Week cards have typically had in recent years.