BRIEFLY MORE SPEAK AT STEROID PROBE.

Byline: Daily News Staff and Wire Services

Baseball's Jason Giambi and Gary Sheffield, boxer Shane Mosley and Oakland Raiders teammates Bill Romanowski and Barret Robbins were among the latest athletes to appear before a grand jury probing a nutritional supplements lab.

Also appearing Thursday in San Francisco was Jeremy Giambi, the younger brother of Jason.

Sheffield, in the process of trying to work out a free-agent contract with the New York Yankees, said his appearance went ``all right'' and flashed a thumbs-up sign as he entered an elevator near the grand jury room.

Romanowski and Robbins were among four Raiders notified by the NFL last month that they failed tests for THG, a source close to the investigation has told the Associated Press on condition of anonymity. The steroid was undetectable in drug tests until this summer.

COLLEGE: Missouri president Elson Floyd said he will not resign and did nothing wrong in his dealings with troubled basketball player Ricky Clemons.

Clemons said in taped jailhouse phone calls over the summer that he and two current players received cash from two coaches. Floyd had befriended Clemons at the request of coach Quin Snyder, but the president said he broke off contact with the player after Clemons wrecked an all-terrain vehicle during a July 4 party at Floyd's home.

TENNIS: Nike acknowledged it has reached a sponsorship contract with Serena Williams, a deal worth close to $40 million over five years, according to reports.

SOCCER: UCLA's Matt Taylor, Adolfo Gregorio, Zach Wells and Leonard Griffin joined Cal State Northridge's Edwin Miranda on the College Soccer News' 2003 All-America Team.

UCLA's Tom Fitzgerald was selected the National Soccer Coaches' Association of America honors for the Far West region after guiding the Bruins to an undefeated Pacific-10 Conference season, a No. 1 ranking for nine weeks of the regular season and to the NCAA quarterfinals.

--Indiana (15-3-5) takes on Santa Clara (16-3-4) while Maryland (20-2-1) meets St. John's (16-5-3) in the semifinals of the College Cup, or the men's soccer version of the Final Four, tonight in Columbus, Ohio. The winners play in the final Sunday.

--Chuck Clegg retired after a 24-year career at San Diego State as a soccer player and coach. Clegg is one of only two coaches in the nation to have guided athletes who played in both the men's and women's World Cup. He coached the SDSU men's team from 1982-1999, compiling a 194-134-39 record.