IBF Junior Lightweight World Champion Gervonta Davis, undefeated No. 1 contender Liam Walsh and promoter Floyd Mayweather got into a jarring session during Thursday’s final press conference at Landmark Hotel in London just two days before Saturday’s world title clash on SHOWTIME from Copper Box Arena.

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Baltimore’s “Tank” Davis, America’s youngest world champion, will attempt to become the first American to successfully defend his title on British soil in nearly a decade*, while Walsh (21-0, 14 KOs) aims to dethrone the man that Mayweather has christened the “future of boxing.”  (*Note: Paulie Malignaggi vs. Lovemore Ndou in 2008)

Davis vs. Walsh is part of a split-site, four-fight SHOWTME CHAMPIONSHIP BOXING telecast that begins on Saturday, May 20, at 6 p.m. ET/3 p.m. PT.  In the main event, Gary Russell Jr. will make his second featherweight title defense and long-awaited homecoming against mandatory challenger Oscar Escandon live from MGM National Harbor just outside of Washington, D.C.

The 22-year-old Davis, who has won by knockout in 16 of his 17 professional fights, will make the first defense of the IBF belt to won via KO over previously unbeaten Jose Pedraza in January.  The 30-year-old Walsh has won by knockout in three of his last four bouts and will be a decided local favorite at an expected sold-out Copper Box Arena.

The pound-for-pound great turned promoter Mayweather and Walsh’s two brothers, fellow professional fighters Michael and Ryan, led the jarring during Thursday’s festivities with Mayweather claiming “I’m 40 years old and I’ll kick all three of your asses in the same night.”

Team Walsh was “not intimidated one little bit” by Mayweather or Tank, while the southpaw Davis promised “On Saturday night you’ll be on your ass.  And then your brothers can get in next.”