One house, 16 fighters. It might not seem all that daunting, but each season, The Ultimate Fighter’s format takes a toll, both mentally and physically, on the fighters seeking to snag that six-figure contract.

The latest bunch of fighters hail from Canada and Australia. Although the rivalry among these nations may not be all that strong, the desire that these athletes have to emerge with a trophy and the honor of fighting inside the Octagon in front of a live audience most certainly is. With Kyle Noke coaching the Australian contingent and Patrick Cote overseeing the Canadian crew, it’s time for The Ultimate Fighter: Nations, Canada vs. Australia which kicks off Jan. 15 and will air every Wednesday night at 10 p.m. ET on Fox Sports 1.

Here is a look at the entire cast.

Team Canada Welterweights
Olivier Aubin-Mercier — 4-0 — 24 years old — Montreal

The H20 MMA product made his pro debut in 2011 and has recorded four first-round victories over his two years of active competition. His go-to move is the rear-naked choke, and he doesn’t waste any time in cinching it up for the win. All four of his victories have come via the hold, with the quickest finish taking just 58 seconds and the longest coming in at seven seconds under the two-minute mark. The southpaw has faced primarily .500 fighters with a similar amount of experience. Aubin-Mercier is a former member of the national judo team and, in addition to training at H20, he also has spent time at the Tristar gym alongside Georges St-Pierre.

Matthew Desroches — 4-0 — 21 years old — Fredericton

The Wulfrun MMA product made his pro debut in April 2012 and has rattled off four first-round stoppage victories. His first three wins came by way of TKO, but he notched his most recent victory via an armbar submission in under two minutes. Desroches has faced a pair of fighters well below the .500 mark, but his submission win came against a previously undefeated Bellator veteran in Jonathan Lemke. Though he’ll compete on the reality series as a welterweight, Desroches took part in a catchweight bout contested at 200 pounds as an amateur.

Kajan Johnson — 19-10-1 — 29 years old — Montreal

Johnson stands as this season’s Mac Danzig—a veteran fighter thrown into the house with a much less experienced group of guys—and may be able to follow a similar path to that of Danzig in terms of success in the TUF tournament. Despite a lackluster record that includes 10 losses, “Ragin’” Kajan has actually been on an impressive run as of late. Johnson started his career in 2002 and compiled a 6-8 mark through his first 14 outings. Since then, he has gone 13-2-1. His two recents losses have come against UFC welterweight Rory MacDonald, who he now trains with at Tristar, and Ryan Machan, a veteran with a similar career mark to that of Johnson. Johnson usually fights as a lightweight and has also suffered a loss at the hands of UFC lightweight contender Josh Thomson. His most recent run with the Canadian MFC organization resulted in wins over Ryan Healy and Richie Whitson, but the most recent of those fights came in October 2011. He has drawn comparisons to Matt Brown, but whereas Brown finishes the majority of his opponents via strikes, Johnson tends to go for the submission. He’s tapped 11 opponents and has only recorded four victories via some form of knockout.

Chad Laprise — 7-0 — 27 years old — London, Ont.

Laprise gives the Canadian welterweight class a total of three fighters with Tristar gym connections, though he splits time between the Tristar camp and the Adrenaline Training Center. Laprise’s seven-fight run began in 2010 and includes two appearances under the Bellator banner, where he fought and defeated Josh Taveirne via submission and Ainsley Robinson by way of a unanimous decision. Laprise surged out of the gates with first-round TKOs in his first four fights. He then recorded a first-round submission finish and has gone the distance in his two most recent outings. Three of the striker’s wins have come against opponents who currently hold winning records.

Team Australia Welterweights
Brendan O’Reilly — 5-0 — 26 years old — Brisbane, QLD

O’Reilly isn’t just a product of the Gamebred Combat Club, he’s also a co-owner of the gym, where he trains alongside the likes of Ben Wall. He made his pro debut in 2009 and racked up three straight wins through 2010. He returned to action in 2012, but his first bout ended in a no-contest after an accidental headbutt. He has notched two more wins since then, including a second-round, rear-naked choke finish in his lone fight of 2013 against Mike Aarts. As is the trend for the show’s welterweight participants, O’Reilly has fought at lightweight and captured Fury MMA’s lightweight crown with the submission win over Aarts, but the remainder of his pro fights have indeed come at welterweight. The former rugby player, who also has an amateur boxing background, has two submission wins, both by rear-naked choke, and scored a TKO victory over Sam Bastin. His remaining two wins came on the judges’ scorecards. His opposition is composed of fighters with records that sit at or below the .500 mark.

Chris Indich — 5-1 — 26 years old — Perth, WA

The Beston Gracie fighter is one of the few welterweight competitors on the reality series who appears to be coming down in weight, rather than going up. He made his pro debut in 2008 with a TKO victory and fought again in 2010, but didn’t become really active in the pro ranks until 2012, when he suffered a TKO loss and picked up one win via strikes and one by way of submission. His lone 2013 bout ended in a first-round submission victory. The 26-year-old has posted his wins against middling competition, whereas his lone loss, a first-round TKO defeat, came at the hands of Ben Kelleher, a fighter whose record now stands at 8-3. Indich has a balanced record that features two wins by way of TKO and two via submission. He comes from an Aboriginal background.

Jake Matthews — 6-0 — 19 years old — Melbourne

At age 19, Matthews is among the youngest members of the TUF cast. Matthews is actually 6-0 as a pro, though the most popular fighter databases only credit him with three pro wins. Those victories follow an amateur career that saw the young “Celtic Kid” go undefeated through 10 outings. Matthews played football in high school and developed an interest in MMA after accompanying a friend to a kickboxing class in an effort to stay in shape. The Nexus product has developed into a dangerous ground fighter as a purple belt in Brazilian Jiu-Jitsu and has stopped all six of his opponents as a pro.

Richard Walsh — 7-1 — 25 years old — Sydney

The only loss on the record of “Filthy Rich” came courtesy of a rear-naked choke delivered by TUF Smashes welterweight winner Robert Whittaker in a 2009 contest. That year also saw Walsh debut and pick up two wins before losing to Whittaker. The VT1 Gym product didn’t return to action until 2011, when he reeled off four straight first-round TKO victories, followed by a unanimous decision win to close out 2012. He didn’t compete in 2013 before joining the TUF cast. With only two exceptions, Walsh’s victories have come against opponents who now stand at or below the .500 mark.

Team Canada Middleweights
Luke Harris — 10-2 — 36 years old — St. Albert, Alb.

At age 36, Harris stands alongside two of Australia’s middleweights as the oldest contestant on this season of the reality series. He’s also one of the more accomplished in terms of his mixed martial arts career, thanks to his time in the MFC ring. The black belt judoka was a member of Canada’s national judo team, but he also holds a black belt in Brazilian Jiu-Jitsu under the tutelage of Robert Drysdale. Harris has been competing professionally since 2009 and suffered his losses in his pro debut and a featured MFC bout against Joseph Henle in 2012. Win or lose, Harris has never gone beyond the first round. He’s vulnerable to the TKO on his feet. However, when the Hayabusa Training Centre product is able to take down his adversary, the submission finish is almost a guarantee—he has ended all 10 wins in such fashion. His recent run with the MFC includes victories over Edwin Dewees and Jason Zentgraf.

Nordine Taleb — 8-2 — 32 years old — Montreal

The Canadian welterweight contingent isn’t the only source of Tristar fighters. Taleb represents the gym as a member of the middleweight roster. He turned pro in 2007 with a win, then suffered a loss in 2008. He didn’t return to competition until 2010, but has since racked up seven more wins and just one additional loss, which came at the hands of Marius Zaromskis in the season-seven Bellator welterweight tournament. Taleb had earned his spot in the tourney bracket with a unanimous decision win over Matt Secor and a second-round TKO of Matt MacGrath. Taleb has five wins and one loss via strikes, with the rest of his bouts going the distance. His most notable win came under the Ring of Combat banner against UFC veteran Pete Sell.

Elias Theodorou — 8-0 — 25 years old — Toronto

“The Spartan” trains out Kros Gym and Mecha MMA. He made his pro debut in 2011 and scored a win in his lone Bellator appearance, which came in 2012 against Rich Lictawa. Theodorou’s resume of three wins by some form of knockout and two by submission suggests a well-rounded skill set that allows him to get things done on the feet or on the ground. With the exception of Lictawa and one other opponent, Theodorou has scored his victories over foes who now possess winning records. His last two outings were championship affairs in which he claimed the Extreme Cage Combat and NAAFS middleweight titles.

Sheldon Westcott — 8-1 — 29 years old — St. Albert, Alb.

Typically fighting at welterweight, Westcott moves up to middleweight to vie for the six-figure TUF contract. The Complete Martial Arts and Fitness product has not lost since dropping a split decision in his pro debut in 2007. Fighting a maximum of two times per year throughout his career, Westcott has slowly compiled his nine-fight MMA record while also dipping his toes into the world of professional boxing with a 2011 debut in which he emerged with a first-round TKO victory. After rebound from the loss in his pro MMA debut to record four first-round finishes, Westcott fought to a split draw with Thomas Denny and then defeated Denny in their rematch via a unanimous verdict. He has also defeated TUF alum Nic Herron-Webb and posted five wins that came in under the one-minute mark. The MFC veteran has three wins via strikes and three by way of submission.

Team Australia Middleweights
Vik Grujic — 6-2 — 36 years old — Melbourne

At age 36, Grujic joins Canadian middleweight Luke Harris and fellow Australian middleweight Daniel Kelly as the oldest fighters in the cast. The father of three overcame thyroid cancer, giving him an inspirational backstory heading into the reality series. He also happens to have one of the worst recent records of any cast member, as he has lost two of his last three outings. Grujic made his pro debut in 2009 and scored three submission wins en route to an undefeated record through five fights. He then ran into Dave Mazany and TUF castmate Zein Saliba, who respectively handed him submission and decision losses. Grujic rebounded with a decision win in his lone fight of 2013. Whereas Grujic’s two losses have come against prospects with winning records, his wins have come exclusively against fighters with losing marks, including a number of fighters who have made their lone pro appearance against the In2Fitness product.

Daniel Kelly — 6-0 — 36 years old — Melbourne

At age 36, the Dominance MMA product rounds out the trio of elders among the TUF cast. Kelly will make TUF history in a way that the other two 36-year-olds cannot: he’ll become the first four-time Olympian to compete on the reality series. The judoka was a member of Australia’s Olympic team from 2000 through 2012. Further adding to his skill set, Kelly holds the rank of purple belt in Brazilian Jiu-Jitsu. His record includes a TKO win in 2006 in which the TKO came when his opponent was thrown from the ring. After a hiatus from MMA to concentrate on his Olympic judo pursuits, Kelly returned to the pro ranks in December 2012 and tallied four wins in less than a year before joining the TUF cast. His four most recent opponents all stand at or above the .500 mark.

Tyler Manawaroa — 10-0 — 19 years old — Brisbane, QLD

At age 19, Manawaroa joins Jake Matthews as the two youngest cast members in the TUF house. Despite his youth, the Integrated MMA product already has an unblemished 10-0 mark as a pro. He made his debut in 2011 and has finished all but one of his foes. “Young Gun” has six submission wins and three victories via TKO. Manawaroa trains alongside Team Australia coach Kyle Noke (when Noke isn’t training at Jackson’s MMA in the US). He has scored six first-round wins, but only a few of his opponents now stand with winning records and he has faced a couple of opponents who have records well below the .500 mark.

Zein Saliba — 4-0 — 25 years old — Sydney

The TP Fight Team and Double Dragon product is a ground specialist with two wins via submission and two by way of decision. Saliba is the only contestant on the reality series to hold a victory over a castmate, having defeated Vik Grujic via unanimous decision in his last outing. Saliba made his pro debut in 2011 and fought twice that year and twice in 2012, but did not compete in 2013. Outside of his win over Grujic, Saliba has fought competition at or below the .500 mark. He trains alongside TUF Smashes welterweight winner Robert Whittaker.