Here are the Callum Walsh vs. Fernando Vargas Jr. round-by-round updates. They provide real-time coverage and live scoring for the super welterweight bout, which co-headlines the TKO Boxing and Zuffa Boxing card set for Sept. 13, and is scheduled for 10, three-minute, rounds.The matchup pits two undefeated power-punchers against each other, but there's a clear gap in both men's accomplishments. Walsh enters the bout with a record of 14-0 and 11 stoppages to his name, and is also the reigning WBC Continental Americas super welterweight champion.By contrast, Vargas Jr. is 17-0, with 15 knockouts/TKOs. However, he is not a world champion, nor has he ever competed for a notable title. Thus, the oddsmakers at DraftKings Sportsbook have Walsh as a -330 favorite, while Vargas Jr. is a +245 underdog.The event starts at 8:00 PM E.T. / 5:00 PM P.T., while Walsh vs. Vargas Jr. is expected to start at 10:30 PM E.T. / 9:30 PM P.T.Follow Sportskeeda for play-by-play analysis and live scoring for the upcoming super welterweight fight.Callum Walsh vs. Fernando Vargas Jr.Round 1: Vargas Jr. with a jab, but Walsh applies immediate pressure, looking for an opening. A jab lands for Walsh, who follows up by leaping in with a one-two. Body shot for Vargas Jr., who continues to fight off the backfoot. Walsh returns fire with body shots of his own, followed by combinations.A shove from Vargas Jr. sends Walsh to the mat, but it's not a knockdown. The fight resumes and Walsh gets back on the front foot, backing Vargas Jr. up to the ropes. Left to the body for Walsh. Another body shot for Walsh.Our Score: 10-9 WalshRound 2: A jab from Vargas Jr. opens the round, but Walsh wastes no time in backing him up with body shots. Jab to the body from Vargas Jr. He dips for another, but Walsh counters him with a combination. Vargas Jr. attempts his own combination, but nothing gets through.Body shots for Vargas Jr., followed by a jab. Uppercut from Vargas Jr. However, Walsh gets right back to the body himself. More body shots from Walsh, with a combination as a follow-up. A good left hand from Vargas Jr. finds the mark, as does a left hook to the body from Walsh.Our Score: 10-9 Walsh, 20-18 Walsh overallRound 3: Vargas Jr.'s corner implored him to apply pressure, but Walsh puts him on the backfoot right from the start, landing to the body. However, Vargas Jr. manages to get a check hook through. Combination from Walsh, while Vargas Jr. counters a follow-up body shot.Check hook from Vargas Jr., but Walsh invests to the body with a combination. Vargas Jr. with a body shot. Walsh to the body.Our Score: 10-9 Walsh, 30-27 Walsh overallRound 4: No one has imposed themselves yet. It's almost certainly a more competitive fight than Walsh expected. Both men start off trading, but Walsh seems more comfortable, landing to the body. Overhand left from Walsh grazes Vargas Jr., but Vargas Jr. returns fire with a big left hand of his own.Body shots from both men. Vargas Jr. on the front foot now, blasting Walsh with an uppercut to the body. Another left from Vargas Jr. lands, followed by hard right hooks to the body. Walsh with body shots. Vargas Jr. tries to respond with body shots of his own but he eats a big counter.Walsh finds the mark with another left hand. Right hand to the body from Walsh. Jab from Vargas Jr., who then eats a stiff one-two from Walsh.Our Score: 10-9 Vargas Jr., 39-37 Walsh overallRound 5: Walsh with a combination to the body. Counters from Walsh, while Vargas Jr. goes low to the body. Vargas Jr. goes too low next time, earning a warning from the referee. Combinations from Walsh. Both men land body shots, but neither fighter is truly separating themselves.Vargas Jr. with a jab. They clinch and separate. They trade, with Vargas Jr. landing jabs. Counters from Walsh, but Vargas Jr. has him against the ropes. He lands a low blow and gets another warning from the referee.Our Score: 10-9 Vargas Jr., 48-47 Walsh overallRound 6: Jabs from Walsh, while Vargas Jr. returns fire with a one-two. Body shot from Vargas Jr., followed by more. Walsh lands body shots in response, but eats a check hook and jab. Vargas Jr. with a hook to the body. Walsh gets back on the front foot, unloading on the body.This is a very close fight. Both men are having moments. There's still no clear winner. Body jab from Walsh. One-two from Walsh, while Vargas Jr. pops him with a jab. Left hook to the body from Walsh. Big left hand at the end of a combination from Walsh.Our Score: 10-9 Walsh, 58-56 Walsh overallRound 7: Jabs and one-twos from Walsh. Combinations from Walsh, while Vargas Jr. comes forward. Body shots from Walsh. Both men overswing, but neither land. Left hand from Vargas Jr. Walsh with more body shots, as he fights off the backfoot more often than he did in the beginning.Uppercut to the body lands for Walsh. A brief clinch ensues, but the referee breaks them up. Jab from Vargas Jr., while Walsh blasts him with body shots and a left hand upstairs. Walsh applying more pressuring again, backing Vargas Jr. up with a two-punch combination to the body.Our Score: 10-9 Walsh, 68-65 Walsh overallRound 8: One-two from Walsh, who backs Vargas Jr. up, stringing together a combination to the body. Vargas Jr. responds in kind with his own body shots. Jabs from Vargas Jr., followed by a flurry. Right hook to the body for Walsh. One-two for Walsh, while Vargas Jr. lands to the body.A good one-two finds the mark for Vargas Jr. Pressure from Walsh, who eats an uppercut, but lands to the body and with a combination as a follow-up. A stiff combination lands for Walsh. Another combination from Walsh.Our Score: 10-9 Walsh, 78-74 Walsh overallRound 9: Walsh opens up with two combinations and a body shot. More body shots from Walsh. Both men trade body shots, but Vargas Jr. seems to be fading. Jabs for Walsh, before they clinch. They break and resume, with Walsh landing several flurries. Vargas Jr. eats every shot though.Combination from Walsh, punctuated by a left hook. Vargas Jr. with a flurry and an uppercut to the body that was low. A good left hook lands for Walsh. One-two for Walsh. Body shots from Walsh.Our Score: 10-9 Walsh, 88-83 Walsh overallRound 10: One-two from Walsh. Both men are trading, with Walsh landing combinations, while Vargas Jr. lands a good uppercut. Jabs land for both men. Left hand for Vargas Jr., who is now pressuring Walsh. Combinations from Walsh, while Vargas Jr. responds with his own.More combinations from Walsh. One-two from Walsh. They clinch and break. Walsh is tiring, but manages to land a counter. Another counter lands for Walsh. Vargas Jr. is fading and eats a combination. More combinations from Walsh. They end the round trading.Our Score: 10-9 Walsh, 98-92 Walsh overallOfficial Decision:Callum Walsh def. Fernando Vargas Jr. via unanimous decision (99-91, 99-91, 100-90)