What time was achieved on Saturday 29th August by the rider who recorded 25' 01.89 90.438mph on Friday 28th August?
CREATE TABLE "2009_junior_classic_practice_times_and_l" (
  "rank" real,
  "rider" text,
  "mon_24_aug" text,
  "tues_25_aug" text,
  "wed_26_aug" text,
  "thurs_27_aug" text,
  "fri_28_aug" text,
  "sat_29_aug" text
);
SELECT "sat_29_aug" FROM "2009_junior_classic_practice_times_and_l" WHERE "fri_28_aug"='25'' 01.89 90.438mph';