Ginjiro Shigeoka was given just enough time from his title win to shower and join the corner in support of his older brother.

Yudai Shigeoka handled the rest from there and forever etched the family name in the boxing history books. 

The pair of Japanese southpaws became the first siblings in boxing history to win major titles in the same weight division on the same show. Yudai followed Ginjiro's IBF strawweight title winning pursuit with a twelve-round, unanimous decision win over Thailand's Panya Padrabsri in their WBC strawweight title consolidation bout.

The elder Shigeoka won by scores of 119-109, 119-109 and 117-111 to claim the belt Saturday on ABEMA TV from Ota-City General Gymnasium in Tokyo. 

Shigeoka was put to the test by the crafty Pradabsri, who rode a 22-fight win streak into the night and sought to make the fifth defense of the WBC title he's held since November 2020. There was a clear power difference heavily in favor of the 26-year-old Tokyo-based Shigeoka, the interim WBC titleholder who used a pawing jab to set up straight left hands and right hooks.

Pradabsri was able to counter early with right hands, which Shigeoka deflected on several occasions but showed a sturdy chin for the ones that got through. The absence of an equalizer, however, left Pradabsri outgunned on those moments when pure boxing and movement wasn't enough to keep Shigeoka at bay or disrupt his rhythm.

Shigeoka connected with a left hand body shot just under Pradabsri's elbow in round three. Pradabsri previously landed a right hand but was forced to play defense as Shigeoka sought to extend his current three-fight knockout streak. 

Pradabsri raised his arms in a victorious salute after a brief exchange at the end of round four. Shigeoka dismissed the action and took the lead in round five. Rapid-fire punches found their home with greater regularity and began to slow down Pradabsri, who remained jab and right-hand dependent as he struggled to swing momentum in his favor. 

Action began to slow in the second half of the fight. It worked to the advantage of Shigeoka, who was given more time to set up, launch and land his left hand over the top. Pradabsri was forced to cover up as Shigeoka landed a right hook to the body and then up top with a right uppercut from long range. 

Shigeoka connected with a series of left hands within the first 40 seconds of round ten. Pradabsri remained upright but was driven to the ropes and did not offer any offense in return. Shigeoka walked in with his hands down by his waist, to which Pradabsri responded with a one-two down the middle.   

The Shigeokas now join a growing list of siblings to win major titles, a category highlighted by their promoter Koki Kameda and his brothers Daiki and Tomoki who created their own boxing history a decade ago. Saturday's historic feat saw Yudai and Ginjiro upgrade their respective interim strawweight titles barely two hours apart. 

Ginjiro Shigeoka (10-0, 8KOs; 1NC) tore through Mexico's Daniel Valladares to win the IBF strawweight title via fifth round knockout earlier on the show.

Pradabsri fell to 40-2 (24KOs), with both career defeats taking place outside of his native Thailand. He dropped an October 2017 decision to former WBC strawweight titlist Xiong Zhao Zhong in Datong, China. The unbeaten run over the next six years included his November 2020 victory over then-unbeaten countryman Wanheng 'The Real TBE' Menayothin to lift the WBC strawweight title. 

Saturday's bout was meant to take place on April 16, only for Pradabsri to fall ill and land in the hospital less than two weeks before the bout. Shigeoka was permitted to challenge for the interim WBC title, which he claimed that night in a one-sided, seventh-round knockout of former WBO titleholder Wilfredo 'Bimbito' Mendez. 

The same event saw Ginjiro rise from the canvas to stop former titlist Rene Mark Cuarto in the ninth round of their interim IBF strawweight title fight. They both successfully upgraded their belts on Saturday, as Yudai advanced to 8-0 (6KOs) with his second-career twelve-round distance win. 

Jake Donovan is a senior writer for Twitter: @JakeNDaBox