Here are the BKFC 82: Jimmie Rivera vs. Timmy Mason round-by-round updates. They provide real-time coverage and live scoring for the upcoming lightweight feature fight set for five, two-minute, rounds on Oct. 4. No title is on the line, but the fight represents a massive opportunity for Mason.For Rivera, the bout is something of a bitter pill. He was originally scheduled to face MMA lightweight legend Frankie Edgar. Unfortunately, 'The Answer' was pulled from the card just days ago due to an undisclosed medical reason, according to BKFC president David Feldman.Now, Rivera, a well-known ex-UFC fighter, who is 2-2-1 under the BKFC banner, with no stoppage wins, must prepare himself to face a relative unknown in Mason. Speaking of Mason, he is 3-2, with two stoppages, and is stepping in on short-notice for a beloved former UFC lightweight champion.He has had little time to prepare, but also has nothing to lose and everything to gain, as Rivera is easily his most high-profile opponent to date. However, the NXTbets oddsmakers do not think highly of Mason's chances, listing him as a +142 underdog, while Rivera is a -191 favorite.The card begins at 6:00 PM E.T. (Eastern Time) / 3:00 PM P.T. (Pacific Time), but the Rivera vs. Mason fight is estimated for a 8:30 PM E.T. / 5:30 PM P.T. start time.Follow Sportskeeda for play-by-play analysis and live scoring for the upcoming lightweight fight.BKFC 82: Jimmie Rivera vs. Timmy MasonRound 1: Mason on the front foot, both men swinging. One-two from Mason, who stands in southpaw. Rivera teasing level changes but eats a straight left. Check hook from Mason, countering Rivera. Double right hand from Rivera. They tie up, but the referee separates them.Body shot from Rivera, followed up by an overhand right. Another body shot from Rivera, but Mason returns fire with a left. They clinch and dirty box before the referee breaks them up. Mason gets right back to pressuring, but Rivera drops him at the bell!Our Score: 10-8 RiveraRound 2: Despite the knockdown, Mason shows no hesitation and applies immediate pressure. He eats a big left hand from Rivera for his troubles though. Right to the body, left to the head for Rivera. However, Mason lands a quick counter, flooring Rivera! Rivera beats the count, but Mason backs him.Uppercut for Mason. Good shots from Rivera and they tie up. They separate and Mason stings Rivera with a left straight. Right hand from Rivera, AND HE DROPS MASON AGAIN! Mason barely beats the count as the round ends. He's hurt bad.Our Score: 10-9 Rivera, 20-17 Rivera overallRound 3: Mason comes forward, despite being dropped twice across two rounds. They trade and Mason slips. The fight resumes and RIVERA DROPS MASON WITH A BODY SHOT! It's over!Official DecisionJimmie Rivera def. Timmy Mason via knockout due to a body shot (0:29)