CREATE TABLE table_59340 ("Res." TEXT, "Record" TEXT, "Opponent" TEXT, "Method" TEXT, "Event" TEXT, "Round" FLOAT, "Time" TEXT, "Location" TEXT)

How many rounds was the bout against bobby rehman?
SELECT "Round" FROM table_59340 WHERE "Opponent" = 'bobby rehman'
SELECT "Round" FROM "table_59340" WHERE "Opponent" = 'bobby rehman'