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The UFC has loaded the deck for its final stop in Canada this year. UFC 231 takes place Saturday at Scotiabank Arena in Toronto with a main card that airs on pay-per-view following prelims on FS1 and UFC Fight Pass.

A championship doubleheader tops the card. Featherweight champion Max Holloway (19-3 MMA, 15-3 UFC) will finally clash with Brian Ortega (14-0 MMA, 6-0 UFC) in the main event, while Valentina Shevchenko (15-3 MMA, 4-2 UFC) and Joanna Jedrzejczyk (15-2 MMA, 9-2 UFC) will decide the next women’s flyweight titleholder in the headliner.

For more on the numbers behind the intriguing UFC 231 main-card lineup, check below for 65 pre-event facts.

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Main event

Holloway returns to competition for the first time since Dec. 2, 2017. The 371-day layoff is the longest of his more than eight-year career.

Holloway is one of three fighters in UFC history to win the undisputed featherweight title, along with Jose Aldo and Conor McGregor.

Holloway is one of two Hawaiian-born champions in UFC history. B.J. Penn also accomplished the feat.

Holloway competes in his 18th UFC featherweight bout, tied with Darren Elkins for the most appearances in divisional history.

Holloway, 27, becomes the youngest fighter to make 19 UFC appearances.

Holloway, at 25, became the youngest fighter in UFC history to earn 15 victories with the organization at UFC 218 in December. He was also the youngest to reach 10 wins at 23.

Holloway enters the event on a 12-fight winning streak. He hasn’t suffered a defeat since August 2013.

Holloway is one of five fighters in UFC history to tally a 12-fight winning streak. Jon Jones, Georges St-Pierre, Anderson Silva and Demetrious Johnson have also accomplished the feat.

Holloway’s 12-fight winning streak in UFC competition is fifth longest in company history behind Silva (16), Jones (13), St-Pierre (13) and Johnson (13).

Holloway’s 12-fight winning streak in UFC competition is the longest among active fighters in the company.

Holloway’s 11-fight UFC winning streak in featherweight competition is the longest active streak in the division.

Holloway’s 14 victories in UFC featherweight competition are the most in divisional history.

Holloway’s six third-round stoppage victories in UFC competition are tied with Randy Couture and Yoel Romero for most in company history.

Holloway’s nine stoppage victories in UFC featherweight competition are the most in divisional history.

Holloway’s seven knockout victories in UFC featherweight competition are most in divisional history.

Holloway’s eight knockdowns landed in UFC featherweight competition are second most in divisional history behind Jeremy Stephens (11).

Holloway has landed 1,337 significant strikes in UFC competition, the third most in company history behind Michael Bisping (1,567) and Frankie Edgar (1,463).

Holloway is one of two fighters in UFC history to land 100 or more significant strikes in six separate fights. Jedrzejczyk also accomplished the feat.

Ortega’s 15-fight unbeaten streak in MMA competition is the longest among active UFC featherweights.

Ortega’s six-fight UFC winning streak in featherweight competition is the second longest active streak in the division behind Holloway (11).

Ortega’s six-fight UFC stoppage streak is the longest active streak in the company.

Ortega’s six-fight stoppage streak in UFC featherweight bouts is the longest active streak in the division.

Ortega has earned nine of his 14 career victories by stoppage. That includes all six of his UFC wins.

Ortega’s six stoppage victories in UFC featherweight competition are tied for third most in divisional history behind Holloway (nine) and Ricardo Lamas (seven).

Ortega is the only fighter UFC history to earn four consecutive third-round stoppage victories.

Ortega’s three submission victories in UFC featherweight competition are tied for third most in divisional history behind Charles Oliveira (six) and Chas Skelly (four).

Co-main event

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Shevchenko was successful in her UFC flyweight debut when she defeated Priscila Cachoeira at UFC Fight Night 125 in February.

Shevchenko outlanded Cachoeira 230-3 in total strikes at UFC Fight Night 125, the largest disparity in UFC women’s history.

Shevchenko has completed at least one takedown against five of her six UFC opponents.

Shevchenko has suffered both of her UFC losses to bantamweight champ Amanda Nunes.

Jedrzejczyk moves up to the UFC flyweight division after spending her first 11 octagon appearances at strawweight, including a stint as champion.

Jedrzejczyk returns to the flyweight division for the first time since June 2014. She’s 5-0 during her career at 125 pounds.

Jedrzejczyk can become the first female fighter in UFC history to win titles in multiple weight classes and sixth overall in company history.

Jedrzejczyk became the first Polish-born champion in UFC history when she defeated Carla Esparza at UFC 185.

Jedrzejczyk is one of nine fighters in UFC history to win a belt with an undefeated record.

Jedrzejczyk’s six victories in UFC title fights are tied with Ronda Rousey for most of any female in company history.

Jedrzejczyk competes in her 12th UFC bout, the second most appearances by any female in company history behind Jessica Andrade (14).

Jedrzejczyk’s nine victories in UFC competition are tied with Nunes for second most of any female in company history behind Andrade (10).

Jedrzejczyk’s nine victories in UFC strawweight competition are the most in divisional history.

Jedrzejczyk has earned 10 of her 15 career victories by decision. That includes seven of her nine UFC wins.

Jedrzejczyk has out-landed her opponents 1,183-481 in significant strikes over her past nine UFC appearances

Jedrzejczyk is one of two fighters in UFC history to land 100 or more significant strikes in six separate fights. Holloway also accomplished the feat.

Jedrzejczyk’s 225 significant strikes landed against Andrade at UFC 211 are a UFC title-fight record. She also holds the second highest amount with 220 against Valerie Letourneau at UFC 193.

Jedrzejczyk’s 225 significant strikes landed at UFC 211 are second most in a UFC fight behind Nate Diaz’s 238 significant strikes against Donald Cerrone at UFC 141 in December 2011.

Jedrzejczyk’s 75 leg kicks landed against Andrade at UFC 211 are the single-fight UFC record. She also holds the second highest amount with 70 against Letourneau at UFC 193.

Jedrzejczyk’s three fight-night bonuses for UFC strawweight bouts are tied with Rose Namajunas for most in divisional history.

Featured bout

Gunnar Nelson (16-3-1 MMA, 7-3 UFC) returns to competition for the first time since July 16, 2017. The 510-day layoff is the longest of his UFC career.

Nelson fell to 3-3 in his past six fights after starting his career on a 15-fight unbeaten streak.

Nelson’s five submission victories in UFC welterweight competition are tied for second most in divisional history behind Chris Lytle (six).

Nelson has completed at least one takedown in eight of his 10 UFC appearances.

Alex Oliveira (19-5-1 MMA, 9-3 UFC) is 7-2 (with one no-contest) in UFC welterweight competition.

Oliveira has earned 16 of his 19 career victories by stoppage. That includes seven of his nine UFC wins.

Oliveira lands 55.7 percent of his significant strike attempts in UFC welterweight competition, the second best rate in divisional history behind Rafael dos Anjos (55.9 percent).

Oliveira vs. Yancy Medeiros at UFC 218 is the only fight in UFC history to feature two knockdowns for each fighter.

Remaining main card

Hakeem Dawodu (8-1-1 MMA, 1-1 UFC) has earned his past two victories by decision after opening his career with six stoppages.

Kyle Bochniak (8-3 MMA, 2-3 UFC) has alternated wins and losses over his past six fights. He lost his most recent bout at UFC 223.

Jimi Manuwa (17-4 MMA, 6-4 UFC) enters the event on the first losing skid of his career. He hasn’t earned a victory since March 2017.

Manuwa has earned all but one of his career victories by stoppage. He’s finished 11 of those wins in Round 1.

Manuwa has earned five of his six UFC victories by stoppage.

Manuwa is the only fighter in UFC history to earn two consecutive victories by stoppage at the 5:00 mark of a round.

Manuwa is the only fighter in UFC history with three victories due to an opponent’s injury.

Thiago “Marreta” Santos (19-6 MMA, 11-5 UFC) was successful in his light heavyweight debut at UFC Fight Night 137 in September.

Santos has earned nine of his 11 UFC victories by knockout.

Santos’ nine knockouts since 2014 in UFC competition are second most in the company behind Derrick Lewis (10).

Santos’ eight knockout victories in UFC middleweight fights are tied with A. Silva for most in divisional history.

Santos’ four knockout victories stemming from kicks in UFC competition are tied with Edson Barboza and Vitor Belfort for second most in company history behind Cerrone (six).

Santos’ nine knockdowns landed in UFC middleweight competition are tied for third most in divisional history behind Silva (13) and Nate Marquardt (12).

For more on UFC 231, 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.