[2] In 2017, Crawford had a short reign as the undisputed light welterweight champion, being the first since Kostya Tszyu in 2004, and the first in any weight class to simultaneously hold all four major world titles since Jermain Taylor in 2005.

[c] Crawford is one of only three male boxers in history, along with Naoya Inoue and Oleksandr Usyk, to become the undisputed champion in two weight classes in the four-belt era.

[20] Though Sanabria was able to return to his feet at the count of seven, he was left staggered, which caused the fight to be waved off by referee Laurence Cole, giving Crawford a technical knockout (TKO) victory.

The fight was scheduled for ten rounds and took place on the undercard of Miguel Cotto vs. Delvin Rodriguez on HBO at the Amway Center in Orlando, Florida, on October 5.

[29][30][31][32] Fighting for the first time as a professional in his hometown of Omaha, Nebraska, Crawford made his first title defense against 2004 Cuban Olympic gold medalist and former IBF featherweight champion Yuriorkis Gamboa.

This was only the second title fight ever held in Omaha, the first being in 1972, when heavyweight champion Joe Frazier defeated the Omaha/Council Bluffs product Ron Stander by fourth-round TKO.

[46][47][48] On March 6, 2015, ESPN reported that Crawford would debut as a light welterweight, challenging for the vacant WBO title at the College Park Center in Arlington, Texas, against 25 year old Thomas Dulorme on April 18.

[53] Top Rank announced on August 20 that Crawford would make his first defence at the CenturyLink Center in Nebraska, Omaha, on October 24 against Montreal based 33 year old contender Dierry Jean.

[54] The first round was a typically cagey, measured start by Crawford up until the final seconds, when he switched to a southpaw stance and stuck Jean with a hard left and a right hook that sent him to the canvas.

[64] On May 3, 2016, it was finally confirmed that Crawford and WBC champion Viktor Postol had officially signed a contract for the highly anticipated light welterweight unification fight on July 23 at the MGM Grand in Las Vegas.

With the victory, Crawford staked his indisputable claim to division supremacy and set himself up for bigger fights, possibly against a returning Manny Pacquiao.

Molina had previously defeated Russian contender Ruslan Provodnikov by UD in a twelve-round June 2016 fight, in which he also claimed the vacant WBO International light welterweight title.

Promoter Bob Arum mentioned Crawford would likely fight again in the summer, against Julius Indongo, where the winner would be crowned the undisputed light welterweight champion.

[107] Following his win, Horn was challenged to a big money fight at light middleweight by 42 year old Anthony Mundine, before eventually defending his WBO title against Crawford.

Horn made the opening two rounds the most competitive with his aggressive style but Crawford adapted and remained the busier fighter throughout, landing the most telling shots of the bout.

[124][125] In front of 13,323 in attendance, the largest crowd he had drawn to date, Crawford came on strong in the final round to score a twelfth-round KO win to retain his WBO welterweight title.

On December 3, it was reported that Top Rank had offered Amir Khan a guaranteed $5 million purse, plus a percentage of PPV revenue, to fight Crawford on March 23, 2019.

[171] During his post-fight interview, Crawford announced his split with promoter Bob Arum and departure from Top Rank, opting instead to test free agency.

[172] On October 21, 2022, Crawford was announced to make the sixth defense of his WBO welterweight championship against David Avanesyan on December 10, 2022, at the CHI Health Center in Omaha, Nebraska, that will headline a BLK Prime Boxing PPV.

Crawford landed a left uppercut followed by a right hook that sent Avanesyan to the canvas ending the fight without a count as medical staff immediately attended to the fallen challenger.

[176] Crawford and the WBA, IBF and WBC welterweight champion Errol Spence Jr. came to an agreement on "all material terms" for a title unification, which was expected to take place on November 19.

[181] Finally on May 25, 2023, it was confirmed that Crawford would fight Errol Spence Jr. for the undisputed welterweight titles on July 29, 2023, at the T-Mobile Arena in Las Vegas, Nevada.

He didn’t think I was coming back with the right.” Spence managed to beat the count and kept trying to mount an offense, but Crawford’s speed, precision, and power overwhelmed him throughout the fight.

[188] On April 20, 2024, it was reported that Crawford would move up a weight class to challenge Israil Madrimov for his WBA super welterweight title in Los Angeles on August 3, 2024.

[191] Ultimately, Crawford's strong push in the championships rounds won him the bout by unanimous decision, with scores of 116-112, 115-113 and 115-113, making him a 4 division world champion.

[194][195][196] In January 2025, it was reported that the bout between Crawford and Canelo Álvarez has been "agreed" to take place at Allegiant Stadium in Las Vegas on September 13, 2025.

This dynamic switch-hitting allows him to control the fight’s pace, disrupt defensive strategies, and land powerful, unexpected punches, often frustrating his opponents and forcing them to take reckless risks, which he expertly counters.

This relentless and clinical approach has not only made him a dominant force in the ring but has also earned him a loyal and worldwide fanbase, who admire his ability to close out fights in thrilling, knockout fashion.

[205] In September 2008, after shooting dice with a few friends, Crawford was shot on the right side of his head, right below his ear, while sitting in the driver's seat of his 1986 Pontiac Cutlass Supreme.

[207] In October 2013, Crawford helped open B&B Boxing Academy, a nonprofit gym dedicated to building the body, mind and character of young people, including at-risk youth in need of positive, structured activities.