Another series of card-crippling injuries wasn’t going to force the UFC to cancel a second event in Los Angeles within six months. The octagon will touch down in “The City of Angels” on Saturday for UFC 184.

Although three of the five originally scheduled main-card bouts won’t push forward as planned, the event will still see one of the sport’s most popular champions attempt to defend her title. Ronda Rousey (10-0 MMA, 4-0 UFC) puts her UFC women’s bantamweight title up for grabs against Cat Zingano (9-0 MMA, 2-0 UFC).

The headliner marks just the third time in UFC history in which two undefeated fighters have met for the gold.

For more on the numbers behind Rousey vs. Zingano, plus the other 10 bouts scheduled for the organization’s third pay-per-view of the year, check out 40 pre-fight facts about UFC 184.

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Main event

Rousey owns or is on the verge of owning several women’s bantamweight and overall UFC records, all of which can be viewed on her complete UFC career stat sheet.

Rousey vs. Zingano will mark just the third championship fight in UFC history between undefeated fighters. Rousey vs. Sara McMann at UFC 170 and Lyoto Machida vs. Rashad Evans at UFC 98 were the others.

Zingano’s two-fight UFC winning streak is tied for the fourth longest active winning streak in the women’s bantamweight division behind Rousey (four), Bethe Correia (three) and Miesha Tate (three)

Zingano is one of two fighters in UFC history to earn back-to-back knockout victories in the third round. She accomplished the feat against Amanda Nunes and Tate. Yoel Romero is the other to earn consecutive third-round finishes.

Zingano has earned eight of her nine career victories by stoppage. She has earned both of her UFC wins by knockout.

Co-main event

Holly Holm (7-0 MMA, 0-0 UFC) makes her UFC debut with an undefeated record. She has earned six of her seven career victories by knockout.

Raquel Pennington (5-4 MMA, 2-1 UFC) is one of four fighters in UFC history to earn a submission victory women’s bantamweight competition.

Pennington’s bulldog-choke submission of Ashlee-Evans Smith at UFC 181 was just the fourth of its kind in UFC history. Urijah Faber, Chris Lytle and Carlos Newton are the others to accomplish the feat.

Remaining main card

Josh Koscheck (17-8 MMA, 15-8 UFC) enters the event on the first three-fight losing skid of his career. He had previously never lost consecutive bouts prior to losses against Tyron Woodley, Robbie Lawler and Johny Hendricks.

Koscheck returns to competition since his first-round knockout loss to Woodley at UFC 167 on Nov. 16, 2013. His 469-day layoff is the longest of his career dating back to his January 2004 debut.

Koscheck will compete in his 23rd UFC welterweight bout and tie Matt Hughes for the most appearances in divisional history.

Koscheck’s 14 victories in UFC welterweight competition are the third most in divisional history behind Georges St-Pierre (19) and Hughes (16).

Koscheck’s eight stoppage victories in UFC welterweight competition are the third most in divisional history behind Hughes (11), Matt Brown (10) and Thiago Alves (nine).

Koscheck’s three submission victories in UFC welterweight competition are tied for the fifth most in divisional history behind Chris Lytle (six), Hughes (five), Dustin Hazelett (four) and Marcus Davis (four).

Jake Ellenberger (29-9 MMA, 8-5 UFC) enters the event on the first three-fight losing skid of his career. He had previously never lost consecutive bouts prior to losses against Kelvin Gastelum, Lawler and Rory MacDonald.

Ellenberger’s eight knockdowns landed in UFC welterweight competition are tied with St-Pierre and Anthony Johnson for the second most in divisional history behind Alves (11).

Ellenberger has landed 57.9 percent of his takedown attempts, the highest takedown accuracy among active UFC welterweights. Oppositely, he’s stuffed 16 of 18 opponent attempts for an 88 percent takedown defense rate.

Gleison Tibau (33-10 MMA, 16-8 UFC) will compete in his 25th UFC lightweight bout, the most appearances in divisional history. The Brazilian’s total cage time of 4:41:11 is also the most of any UFC lightweight.

Tibau’s 25th UFC appearance will put him into a tie with Hughes for the second most bouts in company history behind Tito Ortiz (27).

Tibau returns to competition just 41 days after his victory over Norman Parke at UFC Fight Night 59 on Jan. 18.

Tibau’s 16 UFC lightweight victories are the most in divisional history.

Tibau’s 16 UFC victories are tied for the third most in UFC history behind St-Pierre (19) and Hughes (18).

Tibau’s 16 UFC victories are the most of any fighter in UFC history without competing in a championship bout.

Tibau has fought to a decision 16 times under the UFC banner, the most fights to go the distance in UFC history.

Tibau has earned 11 UFC victories by decision, the second most decision wins by any fighter in UFC history behind St-Pierre (12).

Tibau has fought to a split decision seven times under the UFC banner, the most of any fighter in history.

Tibau has landed 82 takedowns in UFC lightweight competition, the most in divisional history and second most overall in UFC history behind St-Pierre (87).

Tibau lands his takedowns with a 55.8 percent accuracy rate, the fourth highest in UFC lightweight history behind B.J. Penn (66.7 percent), Jamie Varner (60.5 percent) and Ramsey Nijem (57.1 percent).

Tibau defends takedowns with an accuracy of 93.2 percent, the highest rate in UFC lightweight history and fourth highest in UFC history overall behind Barao (100 percent), Tyron Woodley (95 percent) and Jon Jones (94.6 percent).

Tony Ferguson (17-3 MMA, 7-1 UFC) has earned 14 of his 17 career victories by stoppage. He has finished his opponent in all but two of his UFC wins.

Ferguson is one of 13 fighters in UFC history to earn a D’Arce/brabo choke submission win. He accomplished the feat against Mike Rio at UFC 166. The finish at the 1:52 mark of Round 1 was the quickest of its kind in UFC history.

Preliminary card

Mark Munoz (13-5 MMA, 8-5 UFC) enters the event with just one victory in his past four contests.

Munoz has landed 46.4 percent of his significant strikes on the ground, the second largest proportion in UFC middleweight history. Chael Sonnen leads the category at 52.3 percent.

Munoz landed 52 significant ground strikes against Tim Boestch at UFC 162, which is the third most ever landed in a UFC middleweight contest. His 160 significant ground strikes landed in his UFC career are the third most in 185-pound history.

Roan Carneiro (19-9 MMA, 2-3 UFC) returns to the UFC for the first time since he suffered a loss to Ryo Chonan at UFC 188 in September 2008. He’s not registered an octagon victory since he stopped Tony DeSouza at UFC 79 in December 2007.

Carneiro put together a 7-1 record in other organizations to earn a second UFC stint.

Norifumi Yamamoto (18-6 MMA, 0-3 UFC) enters the event on the first three-fight losing skid of his career. He’s just 1-5 in his past six contests overall and hasn’t earned a victory since May 2010.

Yamamoto returns to competition since his submission loss to Vaughan Lee at UFC 144 on Feb. 26, 2012. His 1,098-day layoff is the longest of his career dating back to his March 2001 debut.

Tim Means (22-6-1 MMA, 4-3 UFC) is 2-1 since he returned to the UFC for a second stint in May 2014. He’s earned both of his victories by decision.

James Krause’s (21-6 MMA, 2-2 UFC) submission victory over Sam Stout at 4:47 of Round 3 at UFC 161 stands as the second latest submission ever in a three-round UFC fight. Cole Miller’s UFC 86 finish of Jorge Gurgel holds the record.

For more on UFC 184, check out the UFC Rumors section of the site.

FightMetric research analyst and live statistics producer Michael Carroll contributed to this story. Follow him on Twitter @MJCflipdascript.