@IC_Refugee
Jason Simpson is the most likely person to have murdered both of them. He's the only one capable of fighting off Ron Goldman. The coroner said that Ron's hands and arms had sustained damage and bruising consistent with a fight, and Ron was a black belt. At that point in his life OJ simply wasn't capable of fighting against someone like that... But Jason, who was in good physical condition and had hand-to-hand training while in the military was.
Jason also has a rage disorder, nearly killed a girlfriend by stabbing her, stabbed another girlfriend, and was on probation for stabbing his boss in a dispute. The nigga crazy as fuck and had been institutionalized for it. Also, the day it happened, he had been of his meds AND he was supposedly pissed the fuck off at Nicole for canceling dinner reservations the night before at the restaurant he was a chef at.
Numerous investigators have tried to get LAPD to look at him, there's even one that has a knife consistent with the type that would have been used in both murders, Jason's ride (which he hid after the murders), and everything that was in his storage unit (where the knife was found). The LAPD had zero interest in him despite everything under the sun pointing to dude.