These are the Eduardo Nuñez vs. Christopher Diaz round-by-round updates. They provide real-time coverage and live scoring for the upcoming super featherweight championship fight set to headline the Matchroom Boxing card on Sep. 6.The matchup is scheduled for 12, three-minute, rounds and marks Nuñez's first title defense as the IBF super featherweight champion. His defeat of Masanori Rikiishi, which earned him the belt, was his 18th consecutive win, improving his record to 28-1, with 27 stoppages.Diaz, meanwhile, is 30-5, with 19 knockouts/TKOs to his name. Unfortunately for him, he only just rebounded from a loss to Henry Lebron, and isn't expected to dethrone Nuñez as IBF super featherweight champion. DraftKings Sportsbook lists Nuñez as a -3000 favorite, while Diaz is a +1200 undedog.The card starts at 8:00 PM E.T. (Eastern Time) / 5:00 PM P.T. (Pacific Time), while Nuñez vs. Diaz is estimated for a 10:23 PM E.T. / 7:23 PM P.T. start time.Follow Sportskeeda for play-by-play analysis and live scoring of the upcoming super featherweight title fight.Eduardo Nuñez vs. Christopher DiazRound 1: Nuñez on the backfoot, jabbing to the body, while Diaz is applying heavy pressure. One-two from Nuñez, while Diaz catches him with a jab. Another jab from Diaz, followed by a third. This time Diaz goes low with his jab, stabbing Nuñez in the body. Very tentative start from Nuñez, which is atypical.A good check lands for Nuñez, with Diaz firing back with a jab. Body jab from Nuñez. This has been a very quiet first round, with both fighters feeling each other out.Our Score: 10-9 DiazRound 2: Some hand-fighting from Nuñez, who lines up his right hand, landing it clean. Diaz, though, is undeterred. Nuñez pokes him with a pair of body jabs. And just like that, Nuñez is on the front foot, landing a short combination. Body shots for Nuñez, who returns to the backfoot. He appears to be playing rhythm.Combinations to the body land for Nuñez, but Diaz counters him over-the-top. One-two to the body for Diaz. More counters from Diaz.Our Score: 10-9 Nuñez, 19-19 overallRound 3: The action has yet to pick up, with both men landing jabs. Nuñez's was sharper and stiffer though. A body jab and right hand over the top lands clean for Nuñez. Body shots for both men. Combinations from Nuñez, who is, thus far, still relatively patient. He tries to hop into range, but gets countered.A big right hand from Diaz gets Nuñez's attention, but Nuñez responds in kind! A big right hand from Diaz lands again. Nuñez slips. Diaz with another good right hand. Body jabs for Nuñez.Our Score: 10-9 Diaz, 29-28 Diaz overallRound 4: Nuñez still refusing to commit to his usual aggressive style. He dips low for a body jab, but he's waiting too much to land anything substantial. Diaz traps him against the ropes and unloads a combination. Nuñez responds with combinations to the body, landing hard but only partially.More combinations from Nuñez, who follows up with one-twos to the body. However, Diaz fires back with combinations of his own. It isn't too long, though, before Nuñez blasts him with combinations. Big combinations from both men.Our Score: 10-9 Nuñez, 38-38 overallRound 5: Nuñez circling, trying to find an angle, which he does, landing a good right hand over-the-top. But Diaz responds immediately, cracking Nuñez with a one-two. Body shot for Nuñez, while Diaz lands a combination. Diaz invests in the body, backing Nuñez up.Another good combination lands for Diaz, who has made the adjustments his corner asked for by responding with a combination and dipping out of the pocket in the immediate aftermath.Our Score: 10-9 Diaz, 48-47 Diaz overallRound 6: Nuñez applies immediate pressure, chasing Diaz around the ring, landing combinations. He's swarming him. Diaz ties him up and they engage in a dirty boxing exchange. The referee separates them and Nuñez gets right back on the offense, landing flurry after flurryy to the body and head.The momentum is now firmly on Nuñez's side. Hard body shots for Nuñez. However, Diaz finds a home for a good combination. Nuñez continues to unload, though, refusing to allow Diaz a moment of any extended success. A good right hand lands for Diaz, but Nuñez continues to swarm.Combinations from Diaz, punctuated by a hard body shot. Now it's Nuñez with the combination. Diaz taking a deep breath already. Body shots from Nuñez.Our Score: 10-9 Nuñez, 57-57 overallRound 7: Pressure from Nuñez, who lands a good combination to set the tone for the round. Hard body shot for Nuñez, followed by another flurry to the midsection. Uppercuts from Nuñez split Diaz's guard. Diaz tries to fire back, landing combinations, but Nuñez remains undeterred.They trade and Nuñez cracks Diaz! Diaz stumbled and his gloves touched the canvas. The referee rules it as a knockdown. Diaz gets back to his feet, but ANOTHER COMBINATION FLOORS HIM! Diaz beats the count, but Nuñez smells blood in the water.Diaz lands a good jab, but Nuñez stabs him to the body with his own.Our Score: 10-7 Nuñez, 67-64 Nuñez overallRound 8: Now, it's Diaz who is back on the front foot. Nuñez, though retakes the initiative and draws Diaz into a firefight. Both men land, with Nuñez smacking Diaz with a massive overhand right. Body shots for Diaz. Jabs to the head and body for Nuñez, while Diaz responds with a stiff jab.A good combination lands for Diaz. But Nuñez fires back with his own combination. Diaz, then, responds with venom as well. Left hook from Diaz lands. What a bounce back round.Our Score: 10-9 Diaz, 76-74 Nuñez overallRound 9: Nuñez with pressure, forcing Diaz into clinching. The referee breaks them up and Nuñez unloads with a combination. Diaz covers up and finds an opening for a flurry of his own, but Nuñez blasts him with some hard body shots. Hard combinations from Nuñez.Diaz ties up again, but the referee separates them. Nuñez gets right back to his body shots before stringing a combination together. Diaz's well-known toughness is shining through. Body shots and a double uppercut land for Nuñez, while Diaz responds with a right hand.One-two to the body for Nuñez, followed by combinations.Our Score: 10-9 Nuñez, 86-83 Nuñez overallRound 10: Diaz's corner is imploring him to be more active and aggressive, reminding him that this may be his last crack at a world title. Diaz comes out with pressure, but Nuñez catches him with combination after combination. Diaz fights back, though, landing what he can with his own combinations.However, a Nuñez counter causes him to clinch. The referee breaks them up and Nuñez blasts Diaz with a massive body shot that froze him for a split-second. Uppercut for Nuñez, while Diaz lands body shots and a good right hand. But it isn't long before Nuñez cracks him with a big counter.They're trading in the pocket now, with Nuñez getting the better of the exchanges. Diaz resorts to body shots, finding success. Nuñez pokes him with jabs to the head and body. Hard counters from Nuñez, but Diaz leaps in with a big right hand. Diaz with a one-two, but Nuñez swarms him with a combination.Our Score: 10-9 Nuñez, 96-92 Nuñez overallRound 11: Nuñez opens the round with a body shot, but Diaz blasts him with combinations, backing him up to the ropes. Body jab for Nuñez, but Diaz lands good body shots and combinations over the top. Nuñez fires back with his own combinations, punctuating them with uuppercuts.Counter-combinations from Nuñez as Diaz tries to swing back. More uppercuts from Nuñez. A Diaz right hand cuts Nuñez's left eyebrow open. Uppercuts from Nuñez, who continues investing in the body. They start trading again, with Nuñez landing and Diaz looking to smother. Diaz with a right hand.Nuñez with combinations. Diaz responding with his own.Our Score: 10-10, 106-102 Nuñez overallRound 12: Diaz backing Nuñez up, but Nuñez is measuring him for a counter. Body jab for Nuñez, who then draws Diaz into an exchange. They trade and Diaz lands a good uppercut. Nuñez, meanwhile, catches him with double uppercuts after a combination. Diaz ties him up, but the referee breaks them up.Nuñez with a flurry, landing to the body and head. More uppercuts from Diaz, but Nuñez continues to string together combinations. Diaz landing big shots, with Nuñez trapped against the ropes. Nuñez with hard body shots, but Diaz fires back with a big uppercut.Diaz walking Nuñez back now, but Nuñez blasts Diaz with hard body shots. Massive right hand for Diaz.Our Score: 10-9 Diaz, 115-112 Nuñez overallOfficial DecisionEduardo Nuñez def. Christopher Diaz via unanimous decision (117-109, 117-109, 116-110)