Lucas Matthysse stopped Lamont Peterson in the third round Saturday night at Boardwalk Hall in a matchup of junior-welterweight champions.
Although both own pieces of the 140-pound title, a dispute among the sanctioning bodies prompted the fighters to meet in a non-title fight that lived up to the hype.
''Now we all know who the best 140-pound fighter is,'' Matthysse said through an interpreter. ''No one has dominated Peterson like that.''
Matthysse (34-2, 32 KOs) had two knockdowns in the third round.
The Argentine fighter brought a roaring crowd to its feet when he sent Peterson (31-2-1, 16 KOs) to the canvas with a left hook that thudded against his jaw. Peterson, from Washington, D.C., toppled over when he first tried to get up, but barely managed to beat referee Steve Smoger's 10-count.
Matthysse charged toward Peterson and connected with another left hook that put him down again. Although Peterson got up, Smoger stopped it at 2:14.
Matthysse, the WBC interim champion, pu...