This is a list of events and standings for the Professional Fighters League, a mixed martial arts organization based in the United States, for the 2018 season.
Each weight class had 12 fighters, each of which faced two rivals. The top eight fighters in each weight class qualified to the playoffs. The season concluded on December 31, 2018 with six championship bouts back-to-back with a $10 million prize pool.
<section begin=HWPO />
<nowiki>*</nowiki> Valdrin Istrefi was originally scheduled to face Philipe Lins but was forced to pull out of the bout. He was replaced by Caio Alencar.
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<section begin=LHWPO />
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<section begin=MWPO />
<nowiki>*</nowiki> Shamil Gamzatov was originally scheduled to face John Howard but was forced to pull out of the bout. He was replaced by Eddie Gordon.
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<section begin=WWPO />
<nowiki>*</nowiki> João Zeferino was originally scheduled to face Bojan VeliÃÂkoviàbut was forced to pull out of the bout. He was replaced by Abubakar Nurmagomedov.
<nowiki>*</nowiki> Abubakar Nurmagomedov was originally scheduled to face Magomed Magomedkerimov but was unable to continue in the tournament. He was replaced by his quarterfinal opponent, Bojan VeliÃÂkoviÃÂ.
<section end=WWPO />
<section begin=LWPO />
<nowiki>*</nowiki> Islam Mamedov was originally scheduled to face Rashid Magomedov but was unable to continue in the tournament. He was replaced by his quarterfinal opponent, Thiago Tavares.
<section end=LWPO />
<section begin=FTWPO />
<nowiki>*</nowiki> Timur Valiev was originally scheduled to face Alexandre Almeida but was forced to pull out of the bout. He was replaced by Jumabieke Tuerxun.
<section end=FTWPO />
The point system consists of outcome based scoring and bonuses for an early win. Under the outcome based scoring system, the winner of a fight receives 3 points and the loser receives 0 points. If the fight ends in a draw, both fighters will receive 1 point. The bonus for winning a fight in the first, second, or third round is 3 points, 2 points, and 1 point respectively. For example, if a fighter wins a fight in the first round, then the fighter will receive 6 total points. If a fighter misses weight, then the fighter that missed weight will receive 0 points and his opponent will receive 3 points due to a walkover victory.
<section begin=FTW /> <section end=FTW />
<section begin=LW />
<section begin=WW /> <section end=WW />
<section begin=MW /> <section end=MW />
<section begin=LHW /> <section end=LHW />
<section begin=HW /> <section end=HW />
â = Clinched playoff spot --- ð« = Ruled out --- E = Eliminated
NOTE: Prior to PFL 8, which started the PFL playoff, Valdrin Istrefi was ruled out because of an injury. Caio Alencar was declared the first alternate and participated in the playoff.