CREATE TABLE "nfl_draft" (
  "round" real,
  "overall" real,
  "player" text,
  "position" text,
  "school_club_team" text
);

Question: What is the average overall rank of all players drafted from Duke after round 9?
SQL: SELECT AVG("overall") FROM "nfl_draft" WHERE "school_club_team"='duke' AND "round">9;

Question: What is the sum of all rounds where a Tennessee State player with an overall rank less than 261 was drafted?
SQL: SELECT COUNT("round") FROM "nfl_draft" WHERE "school_club_team"='tennessee state' AND "overall"<261;

Question: What is the highest overall rank of any Tennessee State player drafted before round 10?
SQL: SELECT MIN("overall") FROM "nfl_draft" WHERE "school_club_team"='tennessee state' AND "round"<10;