What is the lowest number of points that Tevita Vaikona scored when making more than 23 tries?
CREATE TABLE "2001_squad_statistics" (
  "player" text,
  "position" text,
  "tries" real,
  "goals" real,
  "points" real
);
SELECT MIN("points") FROM "2001_squad_statistics" WHERE "tries">23 AND "player"='tevita vaikona';