The Brian Newman Jr. vs. Jin Sasaki round-by-round updates are here. They provide real-time coverage and live scoring of the upcoming welterweight championship boxing match set to headline an event held in Japan on June 19. The matchup is of tremendous importance to both men.For Newman Jr., there's more on the line than his WBO welterweight title. His undefeated 27-0 record will be in danger of being blemished if he tastes defeat. However, he will look to continue his winning ways by scoring yet another knockout to add to his 21 stoppages.Meanwhile, Sasaki, a regional champion, will have his first crack at a world title, and will look to improve his 19-1-1 run of form, of which he has managed 17 stoppages. Unfortunately for him, he isn't expected to win, as DraftKings Sportsbook lists Newman Jr. as a -550 favorite, while Sasaki is a +380 underdog.The event is scheduled for a 3:00 AM E.T. (Eastern Time) / 12:00 AM P.T. (Pacific Time) start time, but Newman Jr. and Sasaki are expected to fight at around 7:15 AM E.T. / 4:15 AM P.T.Follow Sportskeeda for play-by-play analysis and live scoring of the upcoming welterweight title fight.Brian Newman Jr. vs. Jin SasakiRound 1: Sasaki on the front foot, swinging with a wild two-punch combination. Hard jabs to the body from the challenger, who is off to a fast start. NORMAN JR. KNOCKS SASAKI DOWN WITH A LEFT HOOK. Wow. It was blindingly quick, and while Sasaki is back to his feet, Noran Jr. is now pressuring.They trade, and NORMAN JR. DROPS HIM WITH A COMBINATION. This is a terrible round from Sasaki, who beats the count but is backed up against the rounds. Two good left hooks land for Sasaki, followed by another to the body. The challenger seems to have regained his bearings.Sasaki backs Norman Jr. up to the ropes, landing to the body, following up with a left hook. The champion unloads with a combination that briefly stunned Sasaki.Our Score: 10-8 Newman Jr.Round 2: Sasaki applies immediate pressure, leading to a clinch. They break and Norman Jr. peppers him with jabs. A big overhand right lands for Norman Jr. Big right hand from the champion stuns Sasaki, who fires back. But it's all Norman Jr. right now, who catches him with combinations.Big body shots from the champion, but the challenger responds with big shots of his own. Hard jabs from Norman Jr., while Sasaki responds with a body jab. He backs the champion into the corner but misses every shot. They work their way back to the center, and Sasaki blasts Norman Jr. to the body.They trade to end the round.Our Score: 10-9 Newman Jr., 20-17 Newman Jr. overallRound 3: Sasaki on the front foot as usual, dipping low for the body jab. Norman Jr. lands some good jabs. A nice left hook lands for Sasaki, but Norman Jr. pours it on with a combination, seemingly wobbling the challenger. Sasaki's legs are shaky, he's staggering backward but is daring the champion to come forward.He seems to have recovered, but eats some big shots from the champion. A right straight from Norman Jr. staggers Sasaki again. A three-punch combination lands for Sasaki, but Norman Jr. responds with his own.Our Score: 10-9 Newman Jr., 30-26 Newman Jr. overallRound 4: Newman Jr. intercepts a level change from Sasaki with an uppercut. Sasaki swings wild but Norman Jr. was wise to the combination. A big right hand lands for Norman Jr. Another big right from the champion finds the mark. A good uppercut to the body lands for Sasaki.More body shots from the challenger, who has Norman Jr. against the ropes. He lands a good right hand over the top. Left hand over the top now. It's a better round from the challenger.Our Score: 10-9 Norman Jr., 40-35 Newman Jr. overallRound 5: Immediate pressure from Sasaki, who overswings and slips. He gets back to his feet and lands a body jab. A second body jab from Sasaki leads to a counter-left hand from Norman Jr. and SASAKI IS OUT COLD ON HIS BACK.Ringside doctors are tending to Sasaki, who is still unconscious. That was a scary knockout. Sasaki is finally up after a few minutes.Official DecisionBrian Newman Jr. def. Jin Sasaki via knockout in round five (0:46)