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

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'