Undisputed super welterweight champion Jermell Charlo puts his title on the line against Tim Tszyu in January.

The bout headlines the Showtime event from Mandalay Bay Resort and Casino in Las Vegas.

One of the most anticipated matches of 2023, Charlo vs. Tszyu pairs two hard-hitting boxer-punchers in a high-stakes bout with Tszyu attempting to dethrone the best 154-pounder in the sport. Charlo earned his position as undisputed champion by stopping Brian Castaño in May and unifying all four titles.

“The super welterweight division has delivered memorable fight after memorable fight in recent years, and the division’s king, Jermell Charlo, will be back to defend his crown and add another chapter to that history on January 28 in Las Vegas,” said Tom Brown, President of TGB Promotions. “This is a battle of contrasting styles as Jermell Charlo brings his special blend of power and sublime ring skills against unbeaten Tim Tszyu, who will bring an aggressive style and championship pedigree into a matchup boxing fans around the world are looking forward to.

“Make sure you’re at Michelob ULTRA Arena in Las Vegas or watching live on SHOWTIME, because this is a fight you won’t want to miss.”

Charlo (35-1-1, 19 KOs) propelled himself to undisputed champion by fighting and beating the best in the division including Castaño, Jeison Rosario, Tony Harrison, Austin Trout and Erickson Lubin. The 32-year-old from Houston won his first title with a stunning knockout of John Jackson for the vacant WBC championship in 2016 and successfully defended the title three times, knocking out Charles Hatley and Lubin, and scoring a unanimous decision over Trout.

He suffered his first loss via unanimous decision to Harrison on a card that he shared with his twin brother, WBC Middleweight Champion Jermall Charlo, in 2018.

The 28-year-old Tszyu (21-0, 15 KOs) has quickly climbed the rankings in the 154-pound division with an all-action, aggressive style. The notable names on his resume include former welterweight champion Jeff Horn, whom Tszyu stopped in round eight, and Terrell Gausha, a top contender and member of the 2012 U.S. Olympic team.

A native of Sydney, Australia, Tszyu made his U.S. and SHOWTIME debut against Gausha and showed his poise and toughness by rallying back from a first-round knockdown to defeat Gausha via unanimous decision.