BRIEFLY : CARAY COLLAPSES, LISTED AS CRITICAL.

Byline: Daily News Wire Services

Chicago Cubs broadcaster Harry Caray collapsed at a nightclub while having a Valentine's Day dinner with his wife.

Caray, 78, was listed in critical but stable condition Sunday at Eisenhower Medical Center. Hospital spokesman Jim Ellis said Caray's wife, Dutchie, asked that no further details be released.

Dutchie Caray told WGN radio, the Cubs' flagship station, that her husband collapsed Saturday night after he leaned on a table that gave way. ``I do not believe that he suffered a heart attack and fell,'' she said.

Caray's stepdaughter, Tunie Wells, said doctors said he definitely did not have a stroke.

TENNIS: Continuing his dramatic comeback after falling out of the top 100 last year, a confident and hard-hitting Andre Agassi easily upset No. 1-ranked Pete Sampras 6-2, 6-4 in the Sybase Open final in San Jose. Despite Sampras' strong serves, Agassi controlled the match with power and placement to win his fourth Sybase title.

Mary Pierce won for the first time in her adopted country, beating Belgium's Dominique Van Roost 6-3, 7-5 to capture the $480,000 Paris Open.

Steffi Graf, who four times has had to abandon her long-awaited comeback from knee surgery, will try again this week in Hanover, Germany. Sidelined since an operation on her left knee in June, Graf is the No. 2 seed in the $450,000 Faber Grand Prix, which begins today.

TRACK AND FIELD: Haile Gebrselassie of Ethiopia set a world record for the indoor 2,000 meters, clocking 4 minutes, 52.86 seconds at the BUPA Indoor Grand Prix in Birmingham, England. He beat the 11-year-old mark of 4:54.07 by Ireland's Eamonn Coghlan.

ALSO: The Philadelphia Phillies have agreed to a two-year contract with catcher Mike Lieberthal. The deal will pay the former Westlake High star $1.2 million this season and $2.2 million next year. There are additional bonuses if he makes the All-Star team or wins a Gold Glove. . . .

Miami Heat forward Jamal Mashburn will miss at least eight weeks after undergoing surgery to repair fractures in his right thumb. . . . A cast was removed from Patrick Ewing's injured right wrist, but New York Knicks coach Jeff Van Gundy said he does not expect his star center to return for the playoffs. . . .

Inside linebacker Winfred Tubbs, who set a New Orleans Saints record for tackles last season, has agreed to a five-year contract with the San Francisco 49ers. Terms of the deal were not disclosed, although a league source told the San Jose Mercury News the contract was for $14.25 million.