Jermall Charlo (; born May 19, 1990) is an American professional boxer. He has held world championships in two weight classes, including the International Boxing Federation (IBF) light middleweight title from 2015 to 2017 and the World Boxing Council (WBC) middleweight title from 2019 to 2024. His identical twin brother, Jermell Charlo, is also a professional boxer who was the undisputed light middleweight world champion.

Early life Jermall is older than his identical twin Jermell by one minute.McCarson, Kelsey (November 26, 2015). "Jermall Charlo's Star Destined to Rise Due to Unmatched Work Ethic". Bleacher Report. Retrieved February 10, 2018. Both brothers are graduates of Alief Hastings High School in Houston, Texas.

Amateur career They began boxing when they started following their father, himself a former boxer, into the gym. As an amateur, Jermall was hopeful for a spot on the 2008 U.S. Olympic team but was forced to back out due to a toe injury. He competed in the amateur ranks for one more year and finished with a record of 65 wins and 6 losses.

Professional career Light middleweight Early career On August 12, 2008, Charlo made his professional debut against Cimmaron Davis and won the fight via 2nd-round technical knockout. On July 11, 2009, Charlo faced Deon Nash, the opponent his brother Jermell went up against and beat in 2008. Jermall won a comfortable unanimous decision victory and later fought Nash to a rematch on August 28, 2010, and Charlo would end up winning again by a corner retirement. On October 24, 2010, Charlo went up against Puerto Rican Carlos Garcia, whom his brother Jermell had fought a year prior. Both brothers beat Garcia by unanimous decision. Over the next five years, Charlo remained undefeated picking up wins over Orlando Lora, Antwone Smith and Norberto Gonzalez. By the close of 2014, Charlo had a record of 20 wins with 16 coming inside the distance and no losses.

On March 28, 2015, Charlo went up against a highly talented prospect, Michael Kenneth Finney (12–2–1, 10 KOs) at The Pearl, Palms Casino, in Las Vegas. Charlo won all of the rounds on all 3 judges scorecards and won a unanimous decision victory. The fight nearly came to an end a few times during the fight; however, Finney managed to take Charlo the distance for the fifth time in his career.

Charlo vs. Bundrage In May 2015, 42-year-old Cornelius Bundrage (34–5, 19 KOs) was ordered by the IBF to make a mandatory title defense against Charlo. July 25 was a potential date discussed initially. On June 8, a few weeks prior to the fight taking place, Bundrage was forced to pull out of the fight citing an injury above his left eye. The card, which was scheduled to July 18 was postponed. The deep cut happened during a sparring session. On August 17, it was confirmed the fight would take place at the Foxwoods Resort Casino in Ledyard, Connecticut, on September 12. After an 18-month wait, Charlo dismantled Bundrage and captured the IBF light middleweight title with a dominating third-round knockout win. Bundrage was knocked down once in rounds 1 and 2 and twice in round 3. An overhand right put Bundrage down in round 1. Charlo never allowed Bundrage to get into the fight, constantly applying pressure. The second knockdown, which occurred in round 2 was from a left jab. Fast combinations to the head dropped Bundrage early in round 3 and a couple of minutes later, a final blow to the head. The referee did attempt to make a count and stopped the fight at 2 minutes and 33 seconds. After the fight, Bundrage said, "I hadn't fought in (11 months), you can't be inactive fighting these young guys."

Charlo vs. Campfort A few weeks after winning the title, Charlo's trainer Ronnie Shields confirmed that Charlo would make his first defence against veteran Wilky Campfort (21–1, 12 KOs) on November 28, 2015, at The Bomb Factory in Dallas, Texas. Campfort's sole loss on his record came in his second professional fight via majority decision after 4 rounds. Shield's, who had been training both the twins, recently confirmed he would no longer be working with Jermell. He stated it was on good terms and it would not affect how Jermall would perform. Charlo floored Campfort in round 2 with a counter right hand. He recorded a second knockdown the following round after a flurry in the corner forced Campfort to take a voluntary knee. Towards the end of round 3 Charlo hit a perfect left uppercut clean to his left eye of Campfort's, compromising his vision was instantly to take a knee again. Despite beating the count, Campfort complained that he was unable to see, causing referee Mark Calo-Oy to wave off the fight. Over the 4 rounds, Charlo out landed Campfort 62–11, connecting on 30% of his power shots. After the bout, Charlo confirmed he would stay at light middleweight and continue to defend his title; however, he wanted big fights. He also praised his jab, calling it the best in the business.

Charlo vs. Trout On March 29, 2016, it was announced that Charlo would make a defence against former world champion Austin Trout (30–2, 17 KOs) at The Cosmopolitan of Las Vegas in Las Vegas, Nevada on May 21. The card also included top light middleweights Erislandy Lara, Vanes Martirosyan and his brother Jermell. In a close contested bout, Charlo defeated Trout by a 12-round unanimous decision. The judges' scored the fight 115–113, 116–112, 116–112. Charlo landed the harder shots to dominate the action in the first six rounds. However, Charlo seemed to gas out a little in the second half of the fight, and was outworked by Trout. Trout suffered a cut over his right eye in the 10th round from a clash of heads but fought well despite suffering the cut. The crowd booed loudly when the scores were read out to let the judges know that they felt Trout should have won. Charlo landed 130 of 474 punches thrown (27%) and Trout landed 117 of his 490 thrown (24%). Trout received a purse of $300,000 and Charlo earned a purse of $500,000.

Charlo vs. Williams Charlo's next title defense was set to be against the No. 1 contender Julian Williams (22–0–1, 14 KOs) on December 10, 2016, at the USC Galen Center in Los Angeles, California. The fight was pushed back as Charlo was nursing an eye injury and was given a 60-day medical extension by IBF. There were also rumours that Charlo would vacate the title to move up to middleweight. Charlo retained his IBF light middleweight title with a fifth round stoppage of Williams. Charlo dropped Williams in the second round with a powerful jab. Williams came back and fought a clever fight, making Charlo miss, slipping punches, landing some good counters. In round 5, Charlo landed a right uppercut, dropping Williams hard. Williams got up; however, Charlo went for the finish, and got it with a third knockdown after a barrage of punches ending with a left hook. After the referee stopped the fight, Williams went over to congratulate Charlo. Charlo didn't want to embrace and told Williams,"I don't want your congratulations, I want your apology." The crowd noticing the heat between the two corners started to boo Charlo. In the post fight interview, Charlo stated Williams had disrespected him leading up to the fight, he also called out Canelo and Golovkin, stating he would move up to middleweight. The fight aired on Showtime and averaged 321,000 viewers, peaking at 370,000 viewers.

Middleweight Charlo officially vacated his IBF light middleweight title on February 16, 2017, in order to move up to middleweight. Charlo had wanted to unify the light middleweight division, but there were no titlists available. At the time, twin Jermell, who Jermall had vowed not to fight, held the WBC title. He also stated after the Williams fight that he had been struggling to make weight. Charlo told ESPN, "It was either going to be a big fight for me at 154 pounds, like against Miguel Cotto or Canelo Álvarez, something big like that, or move up," On March 11, WBC ranked Charlo number 2 ahead of David Lemieux and Curtis Stevens, who were ranked number 3 and 4 respectively. The IBF gave Charlo a number 3 ranking. In March 2017, it was reported by ESPN Deportes that an announcement would be made for Charlo to fight WBC number 1 ranked, Argentinian boxer Jorge Sebastian Heiland in a final eliminator.

Charlo vs. Heiland On June 5, 2017, reports circulated around Argentina that WBC mandatory challenger Jorge Sebastian Heiland (28–4–2, 15 KOs) would be ordered to fight Charlo in a final eliminator. Heiland had been the mandatory since 2015. Early talks indicated the fight could take place on the undercard of the Mikey Garcia vs. Adrien Broner undercard. On June 9, the WBC officially ordered the fight between the two, with the winner becoming the mandatory challenger for the winner of Canelo Álvarez vs. Gennady Golovkin, which would take place in September 2017. The fight was officially announced on June 27. Charlo weighed in a career high 159.2 pounds while Heiland came in slightly lighter at 158.2 pounds.

Charlo became the mandatory challenger for the WBC middleweight title, with a stoppage win over an injured Heiland in round 4. At the start of the fight, it was clear that Heiland's left leg was injured. Charlo first dropped Heiland in round 2 with a left to the head. In round 4, Charlo landed another left hook to the head which dropped Heiland again. Heiland beat the count, but as he was getting up, he stumbled around due to the injury. Referee Benji Esteves stopped the fight immediately at 2:13 of the fourth round to ensure Heiland took no more punishment. Charlo spoke to Showtime's Jim Gray in the post fight interview, "Sometimes the injury can be a decoy. You never want to just jump in and think it's part of his game plan. My coach [Ronnie Shields] told me to stay behind my job like I did, continue to work and it's gonna come." The ringside doctor checked Heiland's leg before the fourth round but let the action continue. Heiland stated that his leg was okay before the fight and the injury occurred in the opening round. Charlo earned $350,000 compared to Heiland who had $200,000 purse. The fight drew an average 500,000 viewers and peaked at 542,000 viewers on Showtime.

Charlo vs. Centeno