CREATE TABLE table_8730 ("Res." TEXT, "Record" TEXT, "Opponent" TEXT, "Method" TEXT, "Event" TEXT, "Round" TEXT)

How many rounds was the fight with a decision by submission (punches)?
SELECT "Round" FROM table_8730 WHERE "Method" = 'submission (punches)'
SELECT "Round" FROM "table_8730" WHERE "Method" = 'submission (punches)'