21.   Skoog worries that his energy is flagging with age, frets about his aching knees.

22.   The aching knee that had caused him to miss only his eighth game in his last seven seasons on Saturday had improved.

23.   The Mariners will have a nervous few days until shortstop Alex Rodriguez and his aching right knee return to the lineup.

24.   The time off to nurse his back also helped his aching knees.

25.   Warts and all, Ewing dragged his aching knees out again to carry the Knicks.

26.   Kruk was battling aching knees all season, and that was a factor in his decision to retire.

27.   McGwire hit a ground ball to shortstop against Dan Serafini, and was clearly favoring his aching right knee when he came off the field.

28.   Olano, leader of the race since Wednesday, pulled out because of an aching left knee, his doctor Nicolas Terrado said.

29.   Novotna, who complained of aching knees and a tired arm earlier in the tournament, will face Martina Hingis for the singles title Saturday.

30.   The therapists work on aching knees, ankles, calves, thighs and backs.