What is the highest uni# of the person with the first name Todd?
CREATE TABLE "player_roster" (
  "surname" text,
  "first" text,
  "d_o_b" text,
  "uninum" real,
  "bats" text,
  "throws" text,
  "position" text
);
SELECT MAX("uninum") FROM "player_roster" WHERE "first"='todd';