BRIEFLY; LEWIS-GRANT IS A GO.

Byline: Daily News Staff and Wire Services Michael Rosenthal

Lennox Lewis is a signature away from defending the undisputed heavyweight championship against unbeaten Michael Grant on April 29 in Madison Square Garden.

``No contracts have been signed yet,'' Donald Tremblay, a spokesman for Main Events, Lewis' American promoter, said Friday. ``They are in the process of drawing them up. Everything has been agreed to in principle.''

He added that the site and date are definite, and the bout will be carried on pay-per-view by TVKO.

In London, Panos Eliades, Lewis' British promoter, said Friday a threat by the IBF to take its title from Lewis if he didn't meet No. 1 contender David Tua has been averted.

--The Felix Trinidad-David Reid fight appears to be on again. The fighters, who had agreed in September to meet but then went their separate ways, are near a deal to fight for Reid's WBA junior middleweight championship in March or April, according to a spokesman for Don King, Trinidad's promoter.

Trinidad had been negotiating for a potentially lucrative rematch with Oscar De La Hoya, but they couldn't reach terms. It leaves the door open for a possible De La Hoya-Shane Mosely fight on June 17 at either Staples Center or Las Vegas.

- Michael Rosenthal

--HOCKEY: New Jersey prosecutors are reviewing the way police handled a New Year's Day car accident involving Philadelphia Flyers captain Eric Lindros and his girlfriend, Jessica Lloyd.

Voorhees Police Chief Keith Hummel confirmed that he had been notified that the Camden County Prosecutor's Office is reviewing the police account of the crash.

``Apparently, someone has said that there are some irregularities in the report,'' Hummel told the Associated Press. ``They're claiming that Eric Lindros was the driver and Jessica Lloyd was the passenger.''

--SOCCER: Diego Maradona, who tested positive for cocaine after he was hospitalized this week in Uruguay, has a serious heart condition.

``We have detected a severe heart pathology,'' Dr. Frank Torres said.

--YACHTING: An international jury in Auckland, New Zealand, has found Dennis Conner guilty of using an illegal rudder during the America's Cup challenger trials, a decision that could cost him a point and drop his Stars & Stripes behind Nippon and America One.

--GOLF: Rick Acton, a 27-year member of the PGA, died of liver cancer Thursday in Redmond, Wash. He was 54.

Even in the final stages of the disease, which resulted in his death Thursday, Acton gave a friend a lesson, accepted an honorary membership from Sahalee Country Club in this Seattle suburb and talked of playing again in the spring.

--MOTOR SPORTS: Indy Racing League driver Sam Schmidt was upgraded from critical to serious condition following spinal surgery, but remained paralyzed 24 hours after breaking his neck during a testing session in Orlando, Fla.