NEW YORK (AP) _ Serena Williams has joined her older sister in the season-ending Chase Championships.

By winning four titles on the WTA Tour this year, Serena Williams has become the fourth player to qualify for the Madison Square Garden tournament, joining Venus Williams, defending champion Martina Hingis and last year's other finalist, Lindsay Davenport.

The Williams sisters _ 17-year-old Serena and 19-year-old Venus _ made history this year when they met in the final of the Lipton Championships in Key Biscayne, Fla.

The 16-player Chase Championships ends in a best-of-5-sets final, the only time during the year that women play more than best-of-3.

___

BEST AND WORST: Anna Kournikova is the only tennis player to make the best-dressed list in the October issue of Sport Magazine.

Andre Agassi, Monica Seles, Serena Williams amd Venus Williams top the worst-dressed list selected by editors of the magazine.

Others named to the best-dressed list include Tiger Woods, Pat Riley, Derek Jeter, Dominique Dawes, Mike Piazza, Rick Pitino and Jamal Anderson. The worst-dress list includes Walt Frazier, David Wells and Shaquille O'Neal.

___

STAR PREDICTIONS: Talk show host Rosie O'Donnell, baseball player Rickey Henderson and singer Melissa Etheridge are among 10 contenders still with a chance to win the U.S. Open celebrity prognosticator race.

Forty celebrities entered the contest to select the men's and women's singles champion in the 1999 U.S. Open. The second annual contest featured celebrities ranging from actress Kellie Martin to former baseball star Tom Seaver.

O'Donnell and Etheridge both picked Andre Agassi and Lindsay Davenport to win the titles, while Henderson predicted Agassi and Venus Williams.

___

SWINGTIME CHARITY: The South Florida Brain Tumor Association (SFBTA) has been selected as the local co-beneficiary of the Swingtime Pro-Celebrity Pro-Am Tennis & Golf Tournament benefiting the Tim & Tom Gullikson Foundation. The event will be held Nov. 13-14 at the Ibis Golf & Country Club in West Palm Beach, Fla.

SFBTA, which has two branches in South Florida with the primary purpose of educating ``survivors, families and health professionals dealing with brain tumors,'' was founded by brain-tumor survivor Sheryl Shetsky in 1990. Coincidentally, Shetsky, an avid tennis player before being diagnosed with brain cancer in 1989, played tennis at the Gullikson brothers' alma mater, Northern Illinois.

Tim Gullikson, who was a top doubles player on the men's tour before coaching superstars Pete Sampras, Martina Navratilova, Mary Joe Fernandez and Aaron Krickstein, died of a brain tumor May 3, 1996, at age 44.

___

STREAK SNAPPED: When Mary Pierce won the second set of their quarterfinal singles match Wednesday, it was the first time in two years that Lindsay Davenport lost a set at the USTA National Tennis Center.

Davenport had won 23 consecutive sets, having not dropped a set as she won the women's singles title last year and nine straight sets this year.

Although her streak was snapped, Davenport defeated Pierce 6-2, 3-6, 7-5 to advance to the semifinals.