Jack Slack

Slack describes himself as “a martial arts fanatic from the U.K. who got involved in karate very young, then boxing, then most recently jiu-jitsu". Initially he started researching and writing for his own training improvement in order to compensate for his "shortcomings in his own physicality", and later, by motivation to showcase to the casual fan and the mainstream media how MMA is a highly skillful art form.

Slack's pen name is a reference to Jack Slack the "Norfolk Butcher", the 1743 Norfolk boxing champion who defeated famed English boxing champion Jack Broughton in 1750 as a heavy underdog and remained undefeated as champion until 1760. Slack has said that he does not particularly admire the man, whose life was "more than a little shady", but that the name has "a ring to it".

Slack's first public contribution to analysing striking came in the form of sharing passages from published authors from his book collection. The first one posted on MMASHARE forum August 2011 titled Jimmy Wilde - The Art of Boxing. From January 2012 onwards he started to write and publish his analytical breakdown on his newly opened blog FightsGoneBy, while promoting his articles on major MMA forums and gaining popularity.

In January 2012 he started using the pen name Jack Slack, submitting Fanposts regularly to SB Nation's websites Bloodyelbow.com (MMA) and the now defunct HeadKickLegend.com (kickboxing), and also writing an article for CagePotato. In April 2012, Slack's article was first published on BloodyElbow front page, and soon he became a stipend author for the website. In that same month he was interviewed by sports announcer and commentator Mauro Ranallo on The MMA Show radio podcast. from July 2012 onwards he focused his writing on more popular fighters in order to increase his readership.

In March 2013 Slack was hired to write regularly for Bleacher Report; initially as a featured columnist and later as "Lead MMA Analyst".

The editor of Fightland contacted Slack and offered him a position as a writer. Though Slack's initial intention was to write two articles a month for Fightland while continuing writing regularly for Bleacher Report, which he started doing from November 2013, on March 31, 2014 Slack left Bleacher Report and was writing eight articles a month only for Fightland. Currently Slack writes as a weekly columnist for Fightland. Though a regular writer, Slack was not exclusive to Fightland, and wrote an article for Fighters Only magazine.

Slack is known for his use of animated GIFs in his articles. Moving to Fightland allowed Slack to embed UFC parent company Zuffa's copyrighted fight footage in his articles.

While Slack is known for analyzing MMA fighters, he has also published articles on professional boxing such as Pulling Back the Curtain on Muhammad Ali, on Kickboxing such as The Finest Striker on the Planet: Giorgio Petrosyan, on Muay Thai such as Eight Limbs: The Masters of Each Strike in MMA, on Karate such as Glory 19: Why Karate Doesn't Work in the Ring, on Wing Chun such as Wing Chun and MMA: Controlling the Center, and articles on the history of martial arts such as Interpreting the Bubishi: One Thousand Pounds Falls to the Ground. He has also published semi satirical articles such as Star Trek: The illogical fighting style of James T. Kirk and Street Fighter in the UFC: Hadoukens and Izuna drops. Slack also published articles about fighting techniques in the Animal Kingdom such as Jack Slack: Street Fighting Roos.

Slack has stated in his July 2014 article Jack Slack: Four Strikers That Every MMA Fan Should Be Watching: "Top level grappling, boxing and Muay Thai are light years ahead technically of what we see in mixed martial arts competition, but progress in MMA is shockingly rapid."

Slack's popular series of articles titled Killing the King, which break down the current UFC champions weaknesses, and how they could potentially be beat, have spanned through three different MMA websites during his career: BloodyElbow.com, Bleacher Report and Fightland.

Slack lists former MMA Heavyweight Fedor Emelianenko as the top striker on the feet and on the ground, in MMA history. He has published a three part article series titled Analyzing Fedor .

According to Slack, the 2003 film Ong-Bak: Muay Thai Warrior starring Tony Jaa; "is perhaps the finest martial arts movie of this generation", and that Tony Jaa's multiple attackers scene in the 2005 film Tom-Yum-Goong (The Protector); "[is] the best fight in movie history".

Book author

Slack has written and self-published four ebooks:

• Elementary Striking: Strategies for Boxing, Kickboxing and MMA. (2012)
• Advanced Striking: Tactics of Kickboxing, Boxing and MMA Masters. (2012)
• Fighting Karate. (2014)
• Finding the Art: Essays on the Principles, Tactics and Techniques Which Govern Combat Sports. (2015)

Matt Saccaro of CagePotato describes Slack as "by far the greatest assessor of in-cage techniques that has graced the keyboard", and Ben Fowlkes of MMAjunkie describes Slack's work as existing "in that rare sports writing space where the reader comes away with a better understanding of the sport itself, rather than merely the people in it".

Mark Serrels of Kotaku (Australia) describes Slack as a "peerless" writer who is "so on the ball it is unbelievable — to the point where fighters will often approach him for help with strategy or read his articles in an attempt to improve". UFC bantamweight champion TJ Dillashaw stated that he used Slack's article Killing the King: Renan Barao in preparation for his fight against then title holder Barao. MMA coaches, fighters and UFC color commentator Joe Rogan have been reading Slack's articles and have found them to be educational.

John Franklin of Combat Press has listed Slack as one of the five best MMA analysts, and stated that "Slack has made Fightland relevant as a place for analysis".

Slack was a World MMA Awards nominee for MMA Journalist Of The Year 2014 award.