International Boxing Federation welterweight champion Simon Brown of Germantown will fight for the second time on a Mike Tyson undercard when Tyson meets Razor Ruddock March 18 at The Mirage in Las Vegas. Brown's opponent is undetermined and, according to Brown's adviser, James Cooks, it also is not yet determined whether Brown's fight will be a title defense.

One possibility is that Brown will defend his title against No. 1-ranked contender Buddy McGirt, who has been idle since suffering a shoulder injury during a fight in July.

Although Brown has yet to come to a long-term agreement with Tyson promoter Don King, Brown has said he hopes to sign a deal with King. . . .

Sugar Ray Leonard held a news conference in New York to help promote his Feb. 9 bout at Madison Square Garden with Terry Norris, the World Boxing Council junior middleweight champion. Leonard said his training hasn't gone all that smoothly, noting he was knocked down by sparring partner Michael Ward last Friday at Leonard's gymnasium in Palmer Park. . . .

Time Warner Sports has joined forces with promoters Bob Arum and Dan Duva to form a pay-per-view network, TVKO, that will begin monthly shows April 19 with the Evander Holyfield-George Foreman heavyweight title bout.

Seth Abraham, president of Time Warner Sports, said the cost to pay-per-view subscribers for the regular monthly shows will be less than $20. The Holyfield-Foreman fight will cost $35 and up.