CREATE TABLE table_203_677 (id NUMBER, "year" NUMBER, "competition" CLOB, "venue" CLOB, "position" CLOB, "event" CLOB, "notes" CLOB)

what competition was his top performance ?
SELECT "competition" FROM table_203_677 ORDER BY "position" LIMIT 1
SELECT "competition" FROM "table_203_677" ORDER BY "position" FETCH FIRST 1 ROWS ONLY