Which player from Tucson, Arizona won the Championship?
CREATE TABLE "pac_10_12_tournament" (
  "year" real,
  "champion" text,
  "score" text,
  "runner_up" text,
  "arena" text,
  "city" text,
  "tournament_mvp" text
);
SELECT "champion" FROM "pac_10_12_tournament" WHERE "city"='tucson, arizona';