This Saturday, the UFC returns to Pay-Per-View action with a card headlined by two championship bouts.

In the main event, UFC middleweight champion Israel Adesanya (18-0 MMA, 7-0 UFC) looks to make the first defense of his title against Yoel Romero (13-4 MMA, 9-3 UFC).

In the co-main, UFC strawweight champion Weili Zhang (20-1 MMA, 4-0 UFC) is also making her maiden title defense, against former champion Joanna Jędrzejczyk (16-3 MMA, 10-3 UFC).

Let’s take a look at the last three results of the two men headlining Saturday’s event:

Adesanya notched consecutive unanimous decision wins over Anderson Silva and Kelvin Gastelum before scoring a second-round KO victory against Robert Whittaker to become the UFC middleweight champion.

A win for Adesanya would mark the first successful defense of the UFC middleweight championship since October 2016. The UFC’s eleven other titles have all been defended more recently than the middleweight belt.

Romero followed a third-round KO against Luke Rockhold with a split-decision defeat to Whittaker, missing weight for both contests. The Cuban last fought in August, suffering a unanimous decision defeat to Paulo Costa.

Romero joins Tank Abbott and Frankie Edgar in the list of fighters who have competed for an undisputed UFC title following back-to-back losses with the promotion.

Here’s a look at how these two fighters fared when competing against common opponents shared throughout their careers. On the left of the graphic, you’ll see how Adesanya fared against any shared opponents and on the right, you’ll see Romero’s results against the same men.

The two men share three common opponents; Brad Tavares, Derek Brunson, and Robert Whittaker.

Both men scored unanimous decision victories over Tavares and TKO stoppage wins against Brunson.

Adesanya defeated Whittaker via second-round KO, whilst Romero came up short against the Australian in two competitive five-round decision verdicts (one unanimous, one split).

Let’s take a look at the last three results of the two women in Saturday night’s co-main event:

Zhang followed a first-round submission victory over Jessica Aguilar with a unanimous decision win against Tecia Torres, before becoming the UFC’s fifth strawweight champion with a 42-second TKO victory against Jéssica Andrade.

But for a solitary career defeat in her professional MMA debut, Zhang would have joined Cain Velasquez, Chris Weidman, Cody Garbrandt, Holly Holm, Israel Adesanya, Joanna Jędrzejczyk, Khabib Nurmagomedov, Lyoto Machida, Mark Coleman, Randy Couture, Rashad Evans, Ronda Rousey, and Tim Sylvia in the list of fighters who became UFC champions whilst undefeated.

Jędrzejczyk notched unanimous decision verdicts over Tecia Torres and Michelle Waterson either side of a five-round unanimous decision defeat to UFC flyweight queen Valentina Shevchenko.

Jędrzejczyk holds the record for both the most victories and the most successful title defenses in UFC strawweight history.

Here’s a look at how these two fighters fared when competing against common opponents shared throughout their careers. On the left of the graphic, you’ll see how Zhang fared against any shared opponents and on the right, you’ll see Jędrzejczyk’s results against the same women.

The two women share four common opponents; Liliya Kazak, Karla Benitez, Tecia Torres, and Jéssica Andrade.

Both women scored stoppage victories over Kazak, whilst Jędrzejczyk had to settle for a decision win against Benitez- an opponent Zhang finished.

Zhang and Jędrzejczyk both defeated Torres in a three-round unanimous decision, whilst against Andrade, Jędrzejczyk once more had to settle for a decision verdict against an opponent Zhang beat inside the distance.

The Dwyer Score Each event, I calculate a ‘Dwyer Score’ for the card. It essentially gives a numeric value to the momentum of fighters competing at any one event. I do this by assigning a figure to each fighter’s current streak; a fighter on a five-fight winning streak contributes +5 to an event’s score, whilst a fighter on a two-fight losing streak contributes -2 to the score. Only UFC results are considered and a fighter coming off a no-contest, a draw, or a bout with another promotion has a streak of 0. When you tally up the scores for every fighter on a card, you get a total for the event- the ‘Dwyer Score.’ This score does not claim to predict or measure the quality or excitement of any one card, but it does give you an idea of the general momentum of fighters heading into a specific event. The graphic to the above-right displays some of the highest-scoring events of all time, to help give some context to this score. UFC 248: Israel Adesanya vs. Yoel Romero posts a score of +14. This score ranks 15th out of all 43 UFC events in the last year, and 9th out of 13 Pay-Per-View events in the same time frame. Here’s a look at how this score compares to other events’ scores over the past year: