The UFC returns to San Diego for the first time in nearly five years on Wednesday with UFC Fight Night 71 at Valley View Casino Center.

A heavyweight matchup between Frank Mir (17-9 MMA, 15-9 UFC) and Todd Duffee (9-2 MMA, 3-2 UFC) serves as the FOX Sports 1-televised main event of a 12-bout lineup that’s rich with notable talent.

Mir is no stranger to main events. The contest marks his fifth UFC headliner while Duffee enters the spotlight for the first time.

For the numbers behind Mir, Duffee and the remaining 22 competitors on the card, check out 60 pre-fight facts about UFC Fight Night 71.

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Main event

Mir is the longest tenured active fighter on the UFC roster. He made his UFC debut on Nov. 2, 2001 – a total of 5,003 days prior to his bout against Duffee.

Mir fights in the UFC for the 25th time, the most of any heavyweight in the organization’s history. His 25th UFC appearance will move him into a tie with Matt Hughes, Gleison Tibau and Josh Koscheck for second all-time behind Tito Ortiz (27).

Mir’s 15 victories in UFC heavyweight competition are the most in divisional history.

Mir’s 12 stoppage victories in UFC heavyweight competition are the most in divisional history.

Mir’s 12 stoppage victories in UFC competition are the fourth most in history behind Anderson Silva (14), Vitor Belfort (13) and Hughes (13).

Mir’s nine first-round stoppage victories in UFC competition are the most in modern history.

Mir’s eight submission victories in UFC competition are tied with Nate Diaz and Kenny Florian for the most in modern UFC history.

Mir has earned all eight of his UFC submissions in the first round, the most in history. Hughes is second in the category with just five submissions in the opening frame.

Mir is one of two fighters in UFC history to earn more than one submission victory in less than one minute each. Rousimar Palhares is the other. Mir has accomplished the feat three times and is owner of the two quickest submissions in heavyweight history.

Mir is one of six fighters in modern UFC history to earn three sub-minute knockout or submission finishes.

Mir is the only fighter UFC history to earn three technical submission victories inside the octagon.

Mir has attempted 21 submissions in UFC heavyweight competition, the most in divisional history.

Mir’s three knockdowns of Antonio Rodrigo Nogueira at UFC 92 are tied for the most in a single UFC heavyweight fight.

Mir has suffered seven of his nine career losses by knockout.

Duffee has earned all nine of his career victories by knockout. His three UFC finishes have come in a total fight time of just two minutes and 44 seconds.

Duffee’s seven-second knockout of Tim Hague at UFC 102 stands as the fastest knockout in heavyweight history and is tied for the third fastest knockout overall in UFC history.

Duffee is one of four fighters in UFC heavyweight history to earn two knockouts in less than a minute each. Roy Nelson, Matt Mitrione and Stipe Miocic also accomplished the feat.

Duffee has defended 90 percent of all opponent takedown attempts in UFC heavyweight competition.

Co-main event

Josh Thomson (20-7 MMA, 3-3 UFC) enters the event on the first two-fight losing skid of his career. He hasn’t earned a victory since April 2013.

Thomson has suffered two of his three UFC losses by split decision. He’s suffered six of his seven total career losses by decision.

Thomson was one of three fighters to hold the Strikeforce lightweight title. The others were Clay Guida and Gilbert Melendez.

Thomson was one of the most active strikers in Strikeforce, and he landed 791 total strikes in his 13 fights with the organization, the fourth most of any fighter.

Thomson’s 69.5 percent striking defense rate is the fifth best in Strikeforce history.

Thomson completed 23 takedowns during his Strikeforce career, the third most in organizational history.

Thomson’s 23 submission attempts in Strikeforce are the most ever. Oppositely, “The Punk” has never been submitted in his MMA career.

Tony Ferguson’s (18-3 MMA, 8-1 UFC) five-fight UFC winning streak in lightweight competition is the third longest in the division behind Donald Cerrone (eight) and Khabib Nurmagomedov (six).

Ferguson has earned 15 of his 18 career victories by stoppage. He has finished his opponent in six of his eight 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.

Remaining main card

Holly Holm (8-0 MMA, 1-0 UFC) brings an undefeated record into her second UFC appearance. She defeated Raquel Pennington by split decision in her octagon debut at UFC 184.

Marion Reneau (6-1 MMA, 2-0 UFC), 38, is the oldest of the 24 fighters scheduled to compete at the event. She’s also the oldest active female fighter in the UFC roster.

Reneau, 38, and Holm, 33, combined for the oldest age (71) for any set of female fighters in UFC history.

Reneau has earned five of her six career victories by stoppage.

Reneau’s submission of Jessica Andrade at the 1:54 mark of Round 1 at UFC Fight Night 61 marked the fourth fastest submission finish in UFC women’s bantamweight history.

Scott Jorgensen (15-10 MMA, 4-6 UFC) competes in his 21st bout under the UFC/WEC banner.

Jorgensen returns to the UFC bantamweight division for the first time since April 2013. He went 1-3 during his stint at flyweight.

Jorgensen has earned just two victories in his past eight UFC appearances.

Jorgensen has suffered four of his past five UFC losses by stoppage.

Jorgensen’s 10 victories in UFC/WEC bantamweight competition are tied for the most in the history of the division.

Manny Gamburyan (14-9 MMA, 5-7 UFC) competes in his second bout since he dropped to the UFC bantamweight division in September 2014. He was successful in his divisional debut with a submission win over Cody Gibson at UFC 178.

Gamburyan’s 29 takedowns landed in UFC/WEC featherweight competition are the third most in combined divisional history. Chad Mendes (42) is the leader.

Gamburyan is one of six fighters in UFC history to earn victories with the promotion in three different weight classes. George Roop, Diego Sanchez, Kenny Florian, Lucas Martins and Ildemar Alcantara also accomplished the feat.

Kevin Lee (10-1 MMA, 3-1 UFC) has earned all three of his UFC victories by decision.

Lee has landed 12 takedowns in his three UFC victories. He’s completed four takedowns against each of his past three opponents.

Alan Jouban (11-3 MMA, 2-1 UFC) has earned eight of his 11 career victories by knockout. That includes both of his victories under the UFC banner.

Jouban is one of 14 fighters in UFC history earn a knockout victory stemming from a standing elbow strike. He accomplished the feat against Richard Walsh at UFC 184.

Matt Dwyer (8-2 MMA, 1-1 UFC) has earned all his career wins and suffered all his career losses by knockout.

Preliminary card

Sam Sicilia (14-5 MMA, 4-4 UFC) has alternated losses and wins over his past six UFC appearances. He earned a victory in his most recent UFC bout.

Sicilia has earned five of his past six career victories by knockout. Three of his four UFC wins have come by stoppage due to strikes.

Jessica Andrade’s (12-4 MMA, 3-2 UFC) makes her sixth UFC women’s bantamweight appearance, the most in divisional history.

Andrade has earned 10 of her 12 career victories by stoppage.

Andrade landed 206 significant strikes against Rosi Sexton at UFC Fight Night 30, the second most in a UFC bout.

Rani Yahya (20-8 MMA, 5-2 UFC) has earned 16 of his 20 career victories by submission. He’s earned 11 of those stoppages in the first round.

Yahya’s four submission victories in UFC/WEC bantamweight competition are tied Brian Bowles for the third most in combined divisional history Urijah Faber (seven) and Renan Barao (five).

Yahya is one of three fighters in UFC history to earn a north-south choke submission in UFC competition. He accomplished the feat against Josh Grispi at UFC on FOX 4. Jeff Monson and Jake Ellenberger have also earned UFC wins with the technique.

Masanori Kanehara (24-11-5 MMA, 1-0 UFC) holds notable career victories over Chan Sung Jung, Norifumi Yamamoto and Michihiro Omigawa.

Igor Araujo (25-7 MMA, 2-1 UFC) enters the event with victories in 14 of his past 16 bouts.

Kevin Casey (8-3 MMA, 0-0 UFC) returns to competition for the first time since he received a 12-month suspension for a failed drug test following his fight with Bubba Bush at UFC 175 in July 2014.

Ildemar Alcantara (21-7 MMA, 4-2 UFC) has earned three of his four UFC victories by decision.

Alcantara is one of six fighters in UFC history to earn victories with the promotion in three different weight classes.

Andrew Craig (9-3 MMA, 3-3 UFC) returns to competition for the first time since June 28, 2014. His 382-day layoff is the longest of his career dating back to his May 2010 debut.

Craig drops to the UFC welterweight division for the first time in his career. He spent his first six bouts with the promotion at middleweight.

Craig enters the event on the first two-fight skid of his career. He’s earned just one victory in his past four fights.

Craig defeated Rafael Natal at UFC on FUEL TV 4 despite finishing with 50 fewer significant strikes landed. Craig’s -50 significant strike differential is the second largest margin ever in a UFC fight featuring a come-from-behind finish. Anderson Silva leads the category for his fifth-round submission of Chael Sonnen at UFC 117, which featured a -60 differential.

For more on UFC Fight Night 71, check out the UFC Events section of the site.

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