The biggest difference is the price. UFC Fight Nights are broadcast on ESPN as part of a subscription. UFC fights are sold on a PPV basis. Another key difference is the type of names involved. Fight Nights tend to focus on rising stars while UFC numbered fights have established fighters.
MMA
The UFC sets up a catchweight fight when both fighters accept the new negotiated weight, discarding the weight limits of their division. Catchweight often occurs when one or both fighters cannot lose enough weight before the weigh-ins, meaning they are heavier than the maximum permitted weight.
Boxing has more PPV purchases than MMA and was rated more popular in America by the Washington Post. However, Google Trends suggest that MMA is more popular on a worldwide scale, with many fans in Europe, South America and the Middle East. MMA also has more fans on Facebook, YouTube and Reddit.
A clinch is designed to put an opponent into a hold. This gives the fighter more control of their opponent’s movements. Once in the clinch, they might want to land punches and kicks. Alternatively, being in a clinch position will enable the fighter to throw their opponent to the mat much easier.
A TKO or Technical Knockout is when a fighter is unable to competently defend themselves. Sometimes, a TKO will occur when doctors or medical staff will decide that it is no longer safe for a fighter to continue the match. On the other hand, a KO or Knockout occurs when a blow renders a fighter unconscious.
But the Pride FC as a company collapsed quickly mainly due to their sudden loss of major TV deals with the Fuji network.