Knockouts that define the career of UFC fighters inside the Octagon.

MMA greats deliver strikes that send their opponents face-first into the canvas.

A look at the Ultimate Fighter coaches.

Looking back at the best knockouts from the past year.

Athletic alumni of the Strikeforce promotion ply their trade in the UFC Octagon and the Strikeforce hexagon. With Ronda Rousey, Robbie Lawler, Daniel Cormier, Cris Cyborg, Alistair Overeem and more.

Fastest finishes in MMA history -- knockouts that took 60 seconds or less. With Johny Hendricks, BJ Penn, The Korean Zombie and more.

A look at some of the sport's most surprising and memorable knockouts; with Junior Dos Santos, The Korean Zombie, Ronda Rousey, Jeremy Stephens, Darren Elkins, Nikita Krylov and more.

A look at the greatest knockouts to take place inside the Octagon in 2016. Featuring Garbrandt vs. Almeida, Miocic vs. Werdum, Woodley vs. Lawler, Bisping vs. Rockhold 2, Paige VanZant vs. Bec Rawlings, Dan Henderson vs. Hector Lombard and many more.

A look at highlight knockouts from the UFC.

Fights that end via perfectly thrown counterpunches. Featuring Conor McGregor, Stipe Miocic, Chuck Liddell, Shogun Rua and more.

See great fight finishes from the sport's best knockout artists. Featuring Anderson Silva, Vitor Belfort, Anthony "Rumble Johnson, Andrei Arlovski, Roy Nelson and more.

The best knockouts from 2015, an action-packed year inside the Octagon. Featuring Ronda Rousey, Stephen "Wonderboy" Thompson, Dan Henderson, Holly Holm, Uriah Hall and more.

Conor McGregor, Michael Bisping, Alexander Gustafsson, Lyoto Machida, Yoel Romero, Joanna Jedrzejczyk and more.

Featuring Carlos Condit, Lyoto Machida, Rafael Dos Anjos, Donald Cerrone and more.

Fight finishes from the flyweight, bantamweight, featherweight and lightweight divisions, including the best from superstars such as Ronda Rousey, Conor McGregor, Jose Also, Donald Cerrone and more.

Featuring the best knockouts from 2014.

See the wild finishes that put up-and-coming fighters on the fast-track to becoming big stars. With Conor McGregor, Cat Zingano, Myles Jury, and more.

Flying knees, spinning kicks and backfists are just a few of the methods used to end fights in this episode of UFC Ultimate Knockouts. Featuring Carlos Condit, Travis Browne, Dennis Siver, Renan Barao and more.

Featuring Chuck Liddell, Jon Jones, Anderson Silva, Cain Velasquez and more.

The greatest finishers from the heavyweight division including Cain Velasquez, Minotauro Nogueira, Junior dos Santos, Andrei Arlovski and more.

Vicious head-kick knockout highlights from Anderson Silva, Anthony Pettis, Lyoto Machida, Rashad Evans and more.

"UFC Unleashed" features the greatest moments from the Ultimate Fighting Championship's vast library of mixed martial arts footage, including matchups that were previously exclusive to pay-per-view audiences. As opposed to simple highlights, "Unleashed" treats fans to bouts in their entirety, from the opening bell to the knockout, tap out or decision, and some episodes consist of a "best of" compilation featuring one UFC star.

One of the biggest advantages for MMA fans resulting from UFC's programming shift to Fox in 2011 is the mixture of content -- both events and series -- produced for Fox-owned Fuel TV. Some of the best comes in the form of the three-hour, mano-a-mano extravaganza "UFC Reloaded," a re-air of the biggest and most memorable UFC pay-per-view events in history. Of course, the fight results are history, too, but seeing the battles for the first time (or once again) is usually worth the wait, and it's free! The series also features footage that was never shown on the original PPV broadcast.

Airing a half-hour or so prior to most NHL games on the NBC Sports Network, "NHL Live" presents the latest news from the National Hockey League and previews the game (or games) airing on the network that night. It also features highlights, exclusive interviews, special features and occasional live look-ins at contests already in progress. Liam McHugh hosts "NHL Live," joined by analysts Mike Milbury and Keith Jones (and occasionally Jeremy Roenick). Guest analysts including Mike Keenan and Eddie Olczyk lend their expertise as well.

Golf Channel's flagship news program, the nightly half-hour "Golf Central" presents highlights from the major golf tours and world events, plus reports and features from tournament sites.

The Ultimate Fighting Championship's weekly magazine show gives fans an all-access pass to the UFC, both inside and outside the famed Octagon. Each half-hour episode includes in-depth profiles of the UFC's biggest stars, tell-all features and compelling backstage footage, plus look-backs and previews of UFC events. The series is hosted by Jon Anik, who previously fronted ESPN's coverage of the sport as the host of "MMA Live."