Joe Smith Jr.

On fight night, in front of a 6,513 crowd, Smith upset and defeated Hopkins via KO when he knocked him out of the ring in the 8th round; Hopkins failed to make it back into the ring as referee Jack Reiss gave his 20-count. He became the first boxer to stop Hopkins inside the distance. Smith started much stronger than expected and his speed and power seemed to surprise Hopkins. In the 8th round, Smith caught Hopkins in the corner and landed five shots to the head that knocked him out of the ring. Hopkins said he was hurt and couldn't get back into the ring. He insisted that he’d been pushed out of the ring, but replays showed it wasn't a push. Hopkins spoke to HBO in the post fight interview, "He shoved me out of the ring. My ankle got twisted when I fell out of the ring. I couldn't stand on my feet ... I can’t believe they gave him a TKO. They can call it a no-contest but not a loss. The momentum from his body pushed me. I went out like a soldier. I’m not in denial." Smith retained his WBC International light heavyweight title with the win and spoke of his respect for Hopkins in the post-fight, stating he is 'a true champion'. Hopkins' reported purse was $800,000, compared to Smith's $140,000. According to Ringtv, the fight averaged 934,000 viewers, peaking at 1.035m on HBO.

In September 2018, it was reported a deal was being worked out for Smith to challenge Russian boxer Dmitry Bivol for his WBA light heavyweight title. On October 15, Yvon Michel told the LA Presse that Smith was in talks to challenge his fighter, the IBF champion Artur Beterbiev (13-0, 13 KOs), on a card that would take place on DAZN. Smith's manager, Joe DeGuardia of Star Boxing also confirmed the Beterbiev fight was the one they would pursue. According to Le Journal de Montréal on November 3, Beterbiev decided against defending his title on December 15 against Smith and instead stated he would fight him in early 2019 instead.

In March 2017, the WBC ordered a final eliminator between Smith and Oleksandr Gvozdyk, ranked third and fourth respectively by the WBC. The winner of the fight would then become the secondary mandatory challenger for the world title. On May 12, Boxing Scene confirmed a deal was in place for Smith to fight Cuban light heavyweight contender Sullivan Barrera (19-1, 14 KOs). Early reports indicated the fight would be part of a HBO triple-header also featuring Miguel Berchelt defending his WBC super featherweight title against mandated Takashi Miura on July 15, 2017 in Inglewood, California. The fight was officially confirmed on May 18 and shown live on HBO: Boxing After Dark. Smith knocked Barrera down in round one with a left hook to the head, but was dominated for the rest of the fight and went on to lose via unanimous decision after 10 rounds. The three judges scored the fight 97-92, 97-92 and 96-93 all in favour of Barrera. Smith was beaten to the punch in almost every round, only landing 61 of his 320 punches thrown (19%), whilst Barrera was more accurate in landing 187 of 484 thrown (39%). In round 4, Smith was hit with a clean uppercut and by the end of round 7, his team urged him to go for a knockout. Referee Jack Reiss had the ringside doctor take a look at Smith after the seventh, but the fight continued. Ringtv scored the fight wider 98-91, only giving Smith two rounds. It was revealed after the fight there was confusion in Barrera's corner as well as the HBO commentary team in regards to the fight being 10 rounds instead of 12. The referee told both boxers to touch gloves at the start of the 10th round. At first the HBO commentary thought the referee had made a mistake, but were later told, both fighters agreed to the fight being 10 rounds. The fight averaged 617,000 viewers on HBO and peaked at 719,000 viewers.

In April 2016, Smith defeated Brazilian boxer Fabiano Pena (16-4-1 12 KOs) via a 2nd-round TKO winning 15 straight fights and continuing to rise up the ranks.

It was announced that Smith would be fighting the #2 WBC contender, former world title challenger Andrzej Fonfara (28-3, 16 KOs) for the WBC international light heavyweight title at the UIC Pavilion in Chicago, Illinois on June 18, 2016 in a scheduled 10 round fight in the main event of the Premier Boxing Champions card on NBC. Fonfara was coming of a huge decision win over British boxer Nathan Cleverly. A win here for Fonfara would set him up for another world title shot.

In January 2018, according to his promoter Joe DeGuardia, Smith was looking to make a ring return around May 2018. DeGuardia stated that he wanted to create an event around Smith, however did not mention whether Smith would fight a top contender. On May 9, it was announced that Smith would make his return to the ring at the Mohegan Sun Arena in Montville, Connecticut on June 30, 2018. On May 31, it was confirmed that 39 year old Melvin Russell (11-4-2, 7 KO's) would be Smith's opponent in a 10-round bout. Smith dropped Russell twice in round 1 before the referee stopped the bout after just 1 minute 45 seconds. After the bout, Smith called for a bout with then-WBO champion Sergey Kovalev.

Smith made his professional debut in October 2009 defeating David Brown by technical knockout in the first round in Connecticut.

Joe Smith Jr. (born September 20, 1989) is an American professional boxer. He challenged once for the WBA light heavyweight title in March 2019 and at regional level, held the WBC International light heavyweight title. He became the first boxer to score a stoppage victory over former undisputed middleweight world champion Bernard Hopkins, who retired after their fight.

Former multiple weight world champion Bernard Hopkins (55-7-2, 32 KOs) announced he would be having a farewell fight at The Forum in Inglewood, California on December 17, 2016. He picked Smith as his final opponent. Hopkins would be coming out of a two-year layoff having last fought in 2014 in a decision loss to then unified light heavyweight champion Sergey Kovalev. Smith was said to be 'excited' to be fighting on HBO, a card promoted by Golden Boy. Both boxers weighed in at 174 pounds.

In an 'Upset of the Year' in the light heavyweight division, Smith won the title by defeating Fonfara via a 1st-round technical knockout. Smith knocked Fonfara down twice in the round 1. The fight was halted after the second knockdown by referee Hector Afu. The official time of the stoppage was at 2:32. Smith caught Fonfara with a big right hand that dropped him. Fonfara got back to his feet. The referee let the fight continue. When the action resumed, Smith landed a left hook that snapped Fonfara's head back. Smith then followed up with a hard right hand to the head that dropped Fonfara in the corner, which ended the fight. The win also ended Fonfara's 15 fight undefeated streak at the UIC Pavilion. The fight took place on Premier Boxing Champions on NBC. The whole card averaged 1.32 million viewers.