With games started smaller than 16 plus receptions of 51, what is the smallest amount of touchdowns listed?
CREATE TABLE "statistics" (
  "year" text,
  "games_played" real,
  "games_started" real,
  "attempts" real,
  "yards" real,
  "touchdowns" real,
  "receptions" real,
  "rec_yards" real,
  "rec_touchdowns" real,
  "fumbles" real
);
SELECT MIN("touchdowns") FROM "statistics" WHERE "receptions"=51 AND "games_started"<16;