Thurman vs. Zaveck

On March 9, 2013, Thurman who had 19 wins in as many fights moved down to welterweight weight and fought on the undercard of Hopkins-Cloud at the Barclays Center in New York City. His opponent was 36 year old former IBF welterweight champion Jan Zaveck (32-2, 18 KOs). Thurman won via unanimous decision after a one-sided 12 round bout, all three judges scored it 120-108 for Thurman, who in the process also won the WBO Inter-Continental welterweight title. It was the first time Thurman fought in a scheduled 12-round bout and his first time to go beyond the eighth round. After the bout, Thurman admitted it was a tough fight and he had prepared to go the distance, whilst also looking for a knockout, which he couldn't find. Thurman called Zaveck 'a true veteran and great boxing lesson' for him.^[13][14]

Thurman vs. Chaves

Despite being the mandatory to the WBO title, on July 27, 2013, Thurman challenged the Interim WBA welterweight champion Diego Gabriel Chaves (22-0, 18 KOs) at the AT&T Center in San Antonio, Texas.^[15] Thurman won the Interim WBA title by knocking out Chaves in the tenth round of a very competitive fight. At the time of the knockout, Thurman led on all three cards: 87–83, 87–83, 86-84 thanks in part to a knockdown in round 9 which was the beginning of the end for Chaves. Thurman had been landing extremely strong body shots the entire fight and finally dropped Chaves with one of the same. The end for Chaves came after another hook to the body and a huge overhand right to the forehead. Thurman was never in trouble but absorbed some strong body work as well from Chaves. They traded close rounds early until Chaves really slowed around the seventh, opening the door for Thurman's left hook.^[16][17][18]

Thurman vs. Soto Karass

On October 12, 2013, it was announced that Thurman would make his first defense of the Interim title on the Broner vs. Maidana WBA world title fight on December 14 against battle tested Jesus Soto Karass (28-8-3, 18 KOs) at the Alamodome in San Antonio, Texas. Soto Karass was coming off a stunning knockout victory over former champion Andre Berto and was deemed to be a difficult opponent.^[19] After a slow start Thurman took over the fight in the middle rounds as he floored Soto Karass in the fifth round before landing a brutal combination in the ninth round sending Soto Karass to the canvas for a second time in the fight and stopping him. Thurman was ahead on all the cards (79–72, 78-73 & 80–71) and turned another strong performance. Thurman boxed patiently, cautiously and smartly, pacing himself and respecting Soto Karass' hand power despite Soto Karass' lack of hand speed. With many prospects and potential good match-ups at welterweight, Thurman claimed he wasn't afraid to lose and wanted to fight the best. Golden Boy promoter Richard Schaefer said, "The Broner-Maidana winner is a possibility. There are so many great match-ups, but he is certainly right there at the very top of the 147-pound weight class."^[20][21][22]

Thurman vs. Diaz, Bundu

On March 25, 2014, it was confirmed that Thurman would fight veteran Mexican boxer and former IBF lightweight champion Julio Díaz (40-9-1, 29 KOs) at the StubHub Center in Carson, California, on April 26. ESPN announced the fight would take place on Showtime.^[23] Thurman defeated Diaz to retain his Interim WBA title. Diaz was forced to take a knee in round 2 following a left hook to his head. Boos were heard around the arena as Diaz failed to come out of his corner for round 4. It was believed that Diaz was hurt badly with a body shot. Diaz praised Thurman after the fight and said, "I've been a two-time world champion. I've never given up in a fight. I'm human. [Thurman] has some power. That's how boxing is." Thurman mentioned then-titleholder Shawn Porter as a potential opponent. Thurman received a $600,000 purse for the fight.^[24]

Thurman's trainer, Dan Birmingham confirmed that Thurman would next defend his title on the undercard of Khan vs. Alexander on December 13 at the MGM Grand Arena in Las Vegas against 40 year old undefeated Italian boxer Leonard Bundu (31-0-2, 11 KOs). The fight was originally set to take place at the Mandalay Bay Events Center.^[25] Prior to the fight, Thurman vowed to stop Bundu, who was the current European welterweight champion, having held the title since 2012.^[26] Thurman was taken the distance for only the third time in professional career, dropping Bundu in the opening round and going on to win a clear decision (120-107, 3 times). Bundu's awkward style saw Thurman on the back foot for majority of the fight, which drew boos from the crowd. At the weigh in before the fight, Thurman called out Floyd Mayweather Jr., however after the fight, he called out Marcos Maidana, who sat at ringside. Thurman stated after the fight that he was happy to have gone the distance and blamed ring rust.^[27][28][29]

Thurman vs. Guerrero

On January 14, 2015 Al Haymon announced that Thurman would fight 31 year old former world champion Robert Guerrero (32-2-1, 18 KOs) on March 7 at the MGM Grand in Las Vegas. The two boxers were supposed to fight one another in 2013, but negotiations fell through.^[31][32] Thurman started the fight off aggressively and dominated early on. During the bout there was some exciting exchanges between Guerrero and Thurman, although Thurman won most of those exchanges and able to outbox Guerrero rather easily for most of the fight. There was an accidental head-butt left Thurman with swelling on the left side of his forehead in round 3, but that did not hamper Thurman's aggressiveness. He knocked Guerrero down in the ninth round before going on to win a (120-107, 118-109 and 118–108) unanimous decision in a rather one-sided bout. In the post-fight, Guerrero praised Thurman saying, "He is one of the best. He came in and stuck to his game plan. I take my hat off to him. I'm not a hater." Thurman received a purse of $1.5 million, whilst Guerrero received $1.225 million. According to CompuBox stats, Thurman connected on 211 of 598 punches (35 percent), and Guerrero landed 104 of 497 (21 percent).^[33][34] The fight peaked at 4.2 million viewers, making it the most watched fight since 1998. The whole card averaged 3.13 million viewers.^[35][36]

Thurman vs. Collazo

On May 21, 2015, PBC announced Thurman's next bout would take place at the USF Sun Dome in Tampa, Florida, outside his hometown of Clearwater, on July 11, against veteran slugger Luis Collazo (36-6, 19 KOs) on ESPN.^[37] Thurman was excited to be in a world title fight in his home state, having last fought there in November 2008.^[38] The attendance for the fight 4,136. Collazo badly hurt Thurman with a body shot in the fifth round but the fight ended after the seventh round due to an injury near the eye of Collazo, which blocked his vision. Thurman was declared the winner via TKO. At the time of stoppage, Thurman was ahead 69–64, 68–65, and 69–64 on the scorecards.^[39] Thurman commented on fighting Floyd Mayweather after the bout saying, "I'm a young, strong champion, Floyd. Come get it, I'm undefeated like you, baby. Come take my 0 baby! Come take my 0! I'm ready. I'm ready." Collazo received a $500,000 purse compared to Thurman's $1.5 million. Thurman landed 119 of 348 punches (34 percent) while Collazo connected on just 76 of 244 (31 percent).^[40][41] The fight peaked 1.1 million viewers, averaging only 799,000 viewers.^[42][43]

On January 8, 2016 Premier Boxing Champions requested to the WBA, the upcoming fight between Danny García and Robert Guerrero be for the vacant WBA 'Super' title as Floyd Mayweather Jr. had retired. The WBA denied to sanction the fight, citing they would like to have no more than two welterweight titleholders.^[44]

Thurman vs. Porter

It was announced on February 17, Thurman would defend his title against Shawn Porter (26-1-1, 16 KOs) on March 12, 2016, at the Mohegan Sun Casino in Uncasville, Connecticut.^[45] On February 23, Thurman's promoter said he had been forced to postpone his upcoming fight with Porter after being injured in a car accident. Lou Di Bella has insisted the injury is not serious or career threatening, but admits the American was lucky to have escaped major injury. Thurman, following the advice of his doctors, was on the sidelines for approximately six weeks before resuming training.^[46] Porter announced that his rescheduled world title clash against Thurman will take place on June 25 at the Barclays Center.^[47] The World Boxing Association then ordered the winner of the Thurman and Porter to face interim WBA welterweight champion David Avanesyan (22-1-1, 11 KOs), who beat #3 WBA Shane Mosley (49-10-1, 41 KOs) on May 28.^[48][49]

In an old-fashioned fight of the year candidate, Thurman successfully defended his title, before a crowd of 12,718, when all three judges scored an identical 115–113 in his favor. Thurman rocked Porter badly on multiple occasions in the fight, he was also hurt himself by a body shot in the eighth round. Thurman earned a $1.4 million purse. This was the first main event televised by CBS in prime time since February 15, 1978, when Muhammad Ali lost a 15-round split decision and the heavyweight title to Leon Spinks in a massive upset. Thurman landed 235 of 539 punches (44 percent) and Porter landed 236 of 662 (36 percent). After the fight, there was immediate talks of a rematch.^[50] The fight averaged 3.1 million viewers, according to ESPN. The card itself averaged 2.4 million viewers.^[51] The live gate was over $1.1 million in ticket sales, the highest gate in the history of Barclays Center to date, it was also the second highest attendance in the history of Barclays Center, with over 12,000 paying customers in attendance.^[52] Premier Boxing Champions voted the bout as their 'Fight of the Year'.^[53]

On July 15, WBA announced Thurman would have a mandatory defense against interim WBA champion David Avanesyan (22-1-1, 11 KOs). Both camps had until August 13 to negotiate the fight or the WBA will order a purse bid.^[54] Due to negotiations breaking down, the WBA elevated Avanesyan to 'regular' champion and Thurman was named as the WBA's 'super' champion.^[55]

Thurman vs. García

On October 25, 2016, Showtime announced several fights to take place towards the end of 2016 and early 2017. One of them was the much anticipated welterweight unification fight between Thurman and fellow undefeated welterweight champion Danny García (33-0, 19 KOs), who holds the WBC title. García defeated journeyman Samuel Vargas in a tune-up fight on November 12, which officially set up the fight for March 4, 2017, at the Barclays Center in New York City.^[56] Unlike García, Thurman chose not to have any tune-up and would fight García after a long 9 month rest.^[57][58] Thurman was ringside at García vs. Vargas and entered the ring after the bout was over. In an interview, he stated, "You have two big punchers meeting on March 4, I don't see how the fight can go 12 rounds. I see myself as the best competition that Danny has ever faced." García replied by simply telling Thurman, he was next.^[56] At a press conference on January 18, 2017, the fight was officially announced and it was said that it would be shown live on CBS.^[59][60] The conference got extremely heated, leading to Angel García standing up and shouting racial slurs towards Thurman.^[61]

Thurman won the fight match via split decision with the scorecards 116–112, 113-115 & 115–113, making him a unified welterweight world champion. Thurman started off as the aggressor hitting and moving back to avoid García's counter hooks. This was the case for the majority of the fight. García began coming forward through the middle rounds and push Thurman on the back foot. Thurman backed off the championship rounds believing he had a comfortable enough lead to win the fight.^[62] MC Jimmy Lennon Jr. gave García false hope that he had won the fight when he announced WBA before WBC, making García believed he had won. In the post fight, Thurman credited his defensive work, "I was not giving the fight away. I felt like we had a nice lead, [and] we could cool down. I felt like we were controlling the three-minute intervals every round. My defense was effective. He wasn't landing." Compubox stats showed Thurman landed 147 of 570 punches thrown, a percentage of 26% and García landed 130 punches of his 434 thrown (30%). It was also reported that both fighters received a purse of $2 million a piece. The fight was attended by a boxing record of 16,533 at the Barclays Center.^[63][64][65]

According to The Ring, the fight peaked at 5.1 million viewers, which was at the last three rounds. The fight averaged 3.74 million viewers. This was the first time since 1998 that a Saturday primetime boxing telecast drew that kind of audience. The entire card drew an average 3.1 million viewers.^[66][67][68]

Inactivity

On May 19, it was reported that Thurman would be out of action for at least six months following surgery on his right elbow. Thurman said he would get back into training after four months.^[69]

On October 3, Lamont Peterson wrote to the WBA officially vacating his 'Regular' title, which meant Thurman was now their only belt-holder at welterweight.^[70] At the WBCs 55th annual convention in October 2017, it was revealed that Thurman would next fight in January 2018 in a voluntary defence.^[71] On October 14, Thurman confirmed that he would return to the ring latest by March 2018. He stated that he would not be taking the rematch with Porter nor would he be fighting IBF titleholder Errol Spence Jr. (22-0, 19 KOs) on his return bout.^[72] According to sources in early January 2018, former welterweight titlist Jessie Vargas (28-2, 10 KOs) was being lined up to challenge Thurman on his return.^[73] On January 24, Showtime announced that Thurman would return to the Barclays Center for the third consecutive time on May 19 and Thurman denied any rumours, stating that he would not be fighting Vargas.^[74][75] On March 30, it was reported that Thurman suffered a deep bruise to his left hand and has been forced to pull out of his next fight, scheduled for May 19.^[76]

On April 24, Thurman vacated his WBC title, forcing the organisation to mandate Porter vs. García for the vacant title. The WBC made Thurman champion emeritus. Thurman explained, "Due to my rehabilitation from my injuries, I agreed to relinquish my WBC title at this time. I continue to rehab my hand and elbow and I look forward to getting back in the ring this summer. This is a temporary setback and I will be the unified champion once again and look forward to winning back my WBC title as soon as possible."^[77][78]

Thurman vs. López

In November 2018, it was announced that Thurman would fight Josesito López on January 26, 2019, at Barclays Center, to defend his WBA welterweight title. López stated that for his return, he wanted to have one "tune-up" fight, and then "return to being an active world-class fighter again". Thurman got rocked in the seventh round, but ultimately he won the fight by majority decision.^[79][80][81]

Thurman vs. Pacquiao

In May 2019, it was announced that he would face eight-division world champion Manny Pacquiao (61-7-2, 39 KO's) on July 20, 2019. Pacquiao won the first round with a late knockdown following a left-right combination to the body and head. This was only the second time Thurman had been knocked down in his career. Pacquiao continued to outbox Thurman until the mid-rounds, when Thurman found some success. Pacquiao was ultimately declared the victor by split decision (113–114, 115–112, 115–112). Thurman praised Pacquiao after the fight, calling him a legendary boxer, also stating "nothing wrong with losing to a legend".^[82]

Thurman vs. Barrios

Thurman would not return to the ring following the first defeat of his professional career for almost 31 months, declaring "Until my retirement every day is a day closer to my fight", when he fought former WBA (Regular) super lightweight champion Mario Barrios on February 5, 2022. Similar to Thurman, Barrios was also coming off the first defeat of his professional career, when he had been stopped by Gervonta Davis in June 2021.^[83] Thurman imposed himself on Barrios and proved to be a class above his opponent, winning a unanimous decision with judges' scorecards of 117–111 and 118–110 twice in a dominant display on Fox Sports pay-per-view.,^[84]