CREATE TABLE table_45605 ("Res." TEXT, "Record" TEXT, "Opponent" TEXT, "Method" TEXT, "Event" TEXT, "Round" TEXT, "Location" TEXT)

How many rounds did the match last when his record was 6-6?
SELECT "Round" FROM table_45605 WHERE "Record" = '6-6'
SELECT "Round" FROM "table_45605" WHERE "Record" = '6-6'