Naoya Inoue

Early years

Inoue turned professional in 2012, signing with Ohashi Boxing Gym. Of his own volition, he signed an agreement with Ohashi to never fight against easy opponents.^[9][10] On October 2, 2012, he fought against Filipino national champion^[8] Crison Omayao,^[11] and won his debut via a fourth-round knockout. After this victory, he won his next two fights against Thai national champion^[8] Ngaoprajan Chuwatana and Japan's number one-ranked light flyweight boxer^[12] Yūki Sano. On August 25, 2013, Inoue captured the Japanese light flyweight title from the WBA's number three-ranked contender, and future WBA light flyweight champion, Ryoichi Taguchi. This was seen as Inoue's toughest test thus far but in the end he dominated and battered Taguchi over ten rounds.^[8][13]

He then fought for the vacant OPBF light flyweight title on December 6, 2013 on the undercard of Yaegashi-Sosa. Inoue defeated Jerson Mancio with a 5th-round TKO to claim the regional title. Earlier that day, his younger brother, Takuma Inoue, made his professional debut with a unanimous decision victory.^[14]

Inoue vs. Hernández, Kokietgym

Inoue stopped Adrián Hernández to be crowned the WBC light flyweight champion in his sixth professional bout at Ota-City General Gymnasium on April 6, 2014.^[3] Hernández was a two-division champion who had previously gone 8-1 in world title bouts, but Inoue dominated the fight from beginning to end.^[15] Inoue's sole defense of his light flyweight title came against Samartlek Kokietgym on September 2014. Inoue routed Kokietgym, winning every round on all scorecards and dropping his opponent twice before finally stopping him in the 11th round.

Inoue vs. Narváez

In November 2014, he vacated his light flyweight title in order to challenge WBO junior bantamweight title-holder Omar Andrés Narváez, the fight was scheduled for December 30, 2014. Narváez was 43-1-2 coming into the bout. His one loss had come by decision to Nonito Donaire in 2011. Narváez had won his first world championship in 2002, making twenty-seven title defenses of his belts since. Inoue arrived at the fight with a 7-0 record. However, the young challenger Inoue put Narváez down within a minute of the first round. He then proceeded to hurt Narváez over and over with carefully placed body shots. Inoue knocked out the long time champion in the second round to capture his second world title.^[16]

Various defenses

Inoue suffered an injury with the punch that put Narvaéz down the first time. In response to Inoue being sidelined, the WBO issued an interim title bout between two of its top-ranked contenders, David Carmona and Warlito Parrenas. The winner would have the right face Inoue following his comeback.^[17] The fight was ruled a split draw after 12 rounds^[18] but Inoue chose to face Parrenas regardless in his comeback bout on December 29, 2015. Parrenas was blown out in a similar manner as Narváez. The referee waved off the fight in the second round, after Parrenas was dropped twice, giving Inoue a TKO victory.^[19]

Inoue would then face Carmona on May 2016, suffering another hand injury midway through the fight.^[20] Inoue would eventually win a comfortable unanimous decision (118-109, 118-109, 116-111). Nevertheless, Carmona was only the second fighter to go the distance with Inoue, after Ryoichi Taguchi. Inoue's third defense came against Petchbarngborn Kokietgym on September of that same year. Inoue was unable to get a quick finish, but he unleashed a flurry of punches in the 10th round which led to Kokietgym being counted out.^[21]

Inoue vs. Kono, Rodríguez

On November 9, it was announced that Inoue's fourth defense would come against Kohei Kono in December 30, 2016.^[22] Kono was a two-time junior bantamweight champion who had lost his WBA belt to Luis Concepción in his previous fight. Naoya's brother, Takuma, was slated to challenge for a world title against Marlon Tapales on the same night but he pulled out due to a fractured right hand.^[22][23] Inoue stopped Kono in another commanding performance. Kono was dropped once by a left hook from Inoue before being stopped in the sixth round. This was the first time Kono lost a fight due to stoppage.^[24]

During 2016, Inoue repeatedly sought a unification bout against four-division champion and WBC champion Román González.^[25][26][27] However, González chose to face Carlos Cuadras instead in the second half of the year.^[28] González stipulated that the terms offered for an Inoue fight weren't good enough, as Inoue was mostly unknown in North America.^[29]

Inoue's fifth defense of his WBO title came against Ricardo Rodríguez on May 2017. Rodríguez proved to be yet another outmatched opponent, as Inoue comfortably won by stopping him in the 3rd round following a flurry of punches.^[30]

Inoue vs. Nieves

Following his easy win over Rodríguez, Inoue joined the HBO Boxing After Dark card "Superfly" set at the StubHub Center on September 9, 2017. The event was headlined by the González-Sor Rungvisai rematch for the WBC junior bantamweight title. It also featured a WBC eliminator between Carlos Cuadras and Juan Francisco Estrada, in addition to Inoue's debut in the US and first pro bout abroad.^[31] Originally, McJoe Arroyo was slated to be Inoue's challenger^[32] but Arroyo wound up fighting Rau'shee Warren in an IBF eliminator instead.^[33] Inoue's next fight would be against Antonio Nieves instead.

Inoue's sixth defense of his WBO title was successful, as he hammered Nieves, who threw in the towel after six rounds. Nieves was rocked towards the end of round 2, but Inoue was unable to finish him as he headed back to his corner when he mistook the 10-second warning with the bell. Inoue scored a knockdown in round 5 after a left hook to the body. Nieves retired after round 6, when Inoue repeatedly landed that left hook to the body to no response from Nieves. Inoue landed 118 of 407 punches (29%) to Nieves' 45 of 209 (22%).^[34][35]

Inoue vs. Boyeaux

Inoue stated that he would move to bantamweight in the future but he would seek to unify titles against another junior bantamweight titleholder in December 2017.^[36] Inoue's team later claimed that they were having trouble securing an opponent for the New Year's Eve date. They'd reportedly agreed to terms with IBF champion Jerwin Ancajas, but he would later announce he was fighting Jamie Conlan in November. Ancajas' manager had previously said that negotiations with Inoue had not taken place.^[37] On November 16, it was announced that Inoue would face Yan Boyeaux on December 30, in a show televised by Fuji TV.^[38] Inoue said he planned to box in the United States again within 2 months after fighting Boyeaux.^[39] Inoue dropped Boyeaux four times before referee Raul Caiz Jr. eventually stepped in at 1 minute and 40 seconds of round 3, giving Inoue the win, successfully retaining the WBO title for the seventh time.^[40] Inoue stated that he had plans to move up to bantamweight, where he would seek to become a three-weight world champion.^[41]

Inoue vs. McDonnell

Promoter Eddie Hearn first reported to Sky Sports on February 14, 2018 that a deal was being negotiated for WBA 'Regular' bantamweight champion Jamie McDonnell (29-2-1 13 KO) to defend his title, which he won in 2014, for the seventh time, against Inoue in Japan. McDonnell's original plan was to move up to super bantamweight in 2018, however instead stated he wanted big challenges and saw Inoue as a solid opponent to test himself.^[42][43] On March 6, Inoue held a press conference in Japan announcing the fight against McDonnell at the Ota-City General Gymnasium in Tokyo, Japan on May 25, 2018.^[44][45] The fight started at a pace that McDonnell was unable to sustain initially being hurt with a left hook to the top of the head, followed by being sent to the canvas by a two punch combination culminating in a left hook to the body. He bravely got up, only to be sent back down after a series of brutal punches by Inoue including another clean left hook which seemed to discombobulate McDonnell's senses. The referee waved the fight off within less than a round declaring Inoue the TKO victor.^[46][47][48]

World Boxing Super Series

After defeating McDonnell, Inoue said, "I'll participate in the World Boxing Super Series to face other world champions with pleasure," confirming he would take part in the bantamweight tournament, where he would meet other world champions, Ryan Burnett (19-0, 9 KOs), WBO champion Zolani Tete (27-3, 21 KOs) and IBF champion Emmanuel Rodríguez (18-0, 12 KOs).^[49]