What was the lowest percentages of wins in 1989 with a GB [c] of 17?
CREATE TABLE "seasons" (
  "mlb_season" text,
  "reds_season" real,
  "league" text,
  "division" text,
  "finish" text,
  "wins" real,
  "losses" real,
  "winpct" real,
  "gb_c" text
);
SELECT MIN("winpct") FROM "seasons" WHERE "gb_c"='17' AND "reds_season"=1989;