Sherdog is an American website devoted to the sport of mixed martial arts (MMA). The site is a member of the Crave Online network and provides MMA related content for ESPN.com.

Sherdog was created by photographer Jeff Sherwood (Nicknamed "Sherdog") in 1997 and was later refined with the help of Garrett Poe. Sherdog features MMA news, individual records of fighters, reviews and previews of MMA events, interviews with fighters and referees, user forums, divisional & pound-for-pound fighter rankings, and original radio programs.

Sherdog is also home to the Sherdog Radio Network, an internet-only sports talk network featuring Sherdog writers and staffers. Weekly programs include The Savage Dog Show hosted by Greg Savage and Jeff Sherwood, Beatdown hosted by TJ DeSantis and Jon Luther, It's Time hosted by Bruce Buffer and The Jordan Breen Show hosted by Jordan Breen.

The current schedule includes Beatdown and SDS on Monday, Wednesday and Friday, It's Time on Tuesdays, the Jordan Breen Show on Tuesdays and Thursdays, and The SRN Rewind every Sunday evening. Also included for big events are SRN Roundtables providing previews and "Beatdown After the Bell" for post-fight recaps.

Frank Shamrock (born Frank Alisio Juarez, III; December 8, 1972) is a retired mixed martial arts fighter. Shamrock was the first to hold the UFC Middleweight Championship (later renamed the UFC Light Heavyweight Championship) and retired as the four-time defending undefeated champion. Shamrock was the #1 ranked pound for pound fighter in the world during his reign as the UFC Middleweight Champion. Shamrock has won numerous titles in other martial arts organizations, including the interim King of Pancrase title, the WEC Light Heavyweight Championship and the Strikeforce Middleweight Championship.

He was named "Fighter of the Decade" for the 1990s by the Wrestling Observer, "Best Full Contact Fighter" by Black Belt magazine (1998), and three time "Fighter of the Year" by Full Contact Fighter Magazine. He is a 7th degree black belt in submission fighting, awarded by O-Sensei Philip S. Porter of the United States Martial Arts Association. He is the adopted brother of former UFC champion Ken Shamrock. He holds notable wins over Bas Rutten, Tito Ortiz, Jeremy Horn, Tsuyoshi Kohsaka, Kevin Jackson and Phil Baroni. He is also the only man to defeat Cesar Gracie. He holds the Guinness World Records for Fastest UFC Title Fight Victory by Submission in 16 seconds over Kevin Jackson at UFC Japan in Yokohama Japan. An author, entrepreneur, philanthropist and social activist, he is a color commentator for Showtime Networks and a brand spokesman for Strikeforce.

Nicholas Robert Diaz (born August 2, 1983) is a American mixed martial artist of Mexican descent. He is the former Strikeforce Welterweight Champion, WEC and IFC Welterweight Champion. He has competed in the Ultimate Fighting Championship, Pride Fighting Championships and Elite Xtreme Combat. Diaz was promoted to black belt in Brazilian Jiu-Jitsu by Cesar Gracie on May 8, 2007. Diaz trains at the Diaz brother's Cesar Gracie Jiu-Jitsu Academy in Lodi, California. Diaz holds the distinction of having never been submitted, and has been finished by strikes only once in 35 fights. He is currently ranked the #4 welterweight in the world by Sherdog, ESPN, MMAWeekly, and USA Today.

Diaz was born in Stockton , California. He is the older brother of UFC fighter Nate Diaz. He went to Tokay High School in Lodi for one year before dropping out. While a freshman, he was a member of the swimming team. Diaz has stated in the past that he is thankful his mother got him into swimming classes because swimming is one of the main reasons why his cardio is so impressive during his fights. Diaz has also said on multiple occasions that he had a hard childhood and grew up without his biological father.

Hector Lombard (born February 2, 1978) is a Cuban born, Australian mixed martial artist and former Olympic Judoka who is currently signed to the Ultimate Fighting Championship.

Hector Lombard, a 4th degree black belt in Judo and former Olympic Judo competitor from Cuba. Lombard currently trains at the world-renowned American Top Team facility in Miami, Florida. Marcus "Conan" Silveira (ATT Head Coach) awarded Lombard with a black belt in Brazilian Jiu Jitsu following his victory at CFC 12.

In 2006, Lombard fought twice in Pride Fighting Championship, losing two unanimous decisions, one to Akihiro Gono and one to Gegard Mousasi.

Lombard headlined the first Cage Fighting Championship show on July 28, 2007, where he fought top Australian fighter Kyle Noke. The result was a controversial draw. On November 23, 2007, Lombard defeated French Kickboxer and Actor Jean-François Lénogue to be the CFC Middleweight Champion. He has defended his title six times with the last title defense coming against Art Santore. Lombard next successfully defended his belt against UFC veteran Joe Doerksen at CFC 16 on March 25.

Ernesto Fritz "Mr. Perfect" Hoost (born July 11, 1965 in Heemskerk, North Holland) is a Dutch former kickboxing legend and four-time K-1 World Champion. He made his debut in 1993 at the K-1 World Grand Prix 1993, where he came just one win short of the world title. He announced his retirement on December 2, 2006 after the K-1 World GP Final tournament in Tokyo Dome, Japan.

In 1993, in his first K-1 World Grand Prix, in quarterfinals Hoost defeated Peter Aerts by decision, knocked out Maurice Smith in semis and advanced to the tournament finals where he was knocked out by Branko Cikatic. Hoost got another shot at a title on December 19, 1993, when he won the K-2 World Championship, knocking out Changpuek Kiatsongrit in four rounds. This was the only time the K-1 organization held a K-2 tournament.

Hoost reached the K-1 World Grand Prix Finals again in 1995, but lost to Peter Aerts by a four round decision. He went on to win every fight the remainder of that year. In 1996, he lost at the K-1 World Grand Prix 1996 finals to Andy Hug by a four round split decision. He finally became K-1 World Champion in 1997 when he beat Hug by a three-round unanimous decision.