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Brian Norman Jr. will put his WBO welterweight world title on the line against Japanese contender Jin Sasaki on June 19 in Tokyo, continuing his quest to establish global dominance in the 147-pound division.

The 24-year-old champion, nicknamed "The Assassin," enters the bout with a perfect 27-0 record that includes 21 knockouts. This will mark his second title defense since being elevated to full champion status earlier this year.

"Traveling to Japan is just another opportunity to show I'm the best welterweight in the world," Norman might say about this upcoming challenge in hostile territory.

Norman's rise to championship status has been methodical. The Atlanta native began his professional journey at just 17 years old, building his record with more than a dozen early victories in Mexico before making his mark stateside. After signing with Top Rank in early 2023, he claimed the interim title with a statement-making 10th-round knockout of Giovani Santillan in San Diego.

His most recent outing showed his devastating power when he dispatched Puerto Rican puncher Derrieck Cuevas in just three rounds back in March.

But Jin Sasaki (19-1-1, 17 KOs) represents a legitimate threat on home soil. The Japanese contender has been perfect since moving to welterweight, racking up nine straight wins with seven knockouts. His resume includes claiming the WBO Asia Pacific title in January 2023 with a first-round destruction of Ryota Toyoshima, followed by five successful defenses.

Interestingly, Sasaki only recently went the full 12-round distance for the first time in his career, decisioning Shoki Sakai on the undercard of a Naoya Inoue fight earlier this year.

The June 19 card at Ota City General Gymnasium features more than just the main event. In the co-feature, undefeated Japanese prospect Sora Tanaka (3-0, 3 KOs) takes an ambitious step up to 12 rounds in just his fourth professional fight, facing veteran Takeru Kobata for the vacant OPBF welterweight title.

Also on the card, Filipino southpaw Cristian Araneta and Thailand's Thanongsak Simsri will battle for the vacant IBF junior flyweight world title, while local rivals Yuki Onu and Reiya Abe clash for the Japanese featherweight championship.

U.S. fans will need to set their alarms early – the ESPN+ stream begins at 4 a.m. ET/1 a.m. PT, with the main event expected around 7:15 a.m. ET. Will Norman continue his unbeaten run, or can Sasaki pull off the upset in front of his home crowd?