CREATE TABLE table_48091 ("Res." TEXT, "Record" TEXT, "Opponent" TEXT, "Method" TEXT, "Event" TEXT, "Round" FLOAT, "Time" TEXT, "Location" TEXT)

Which Round has an Opponent of jorge magalhaes?
SELECT AVG("Round") FROM table_48091 WHERE "Opponent" = 'jorge magalhaes'
SELECT AVG("Round") FROM "table_48091" WHERE "Opponent" = 'jorge magalhaes'