CREATE TABLE table_60363 ("Res." TEXT, "Record" TEXT, "Opponent" TEXT, "Method" TEXT, "Event" TEXT, "Round" FLOAT, "Time" TEXT, "Location" TEXT)

What is the sum of the rounds of the match with brett chism as the opponent?
SELECT SUM("Round") FROM table_60363 WHERE "Opponent" = 'brett chism'
SELECT SUM("Round") FROM "table_60363" WHERE "Opponent" = 'brett chism'