SELECT "Round" FROM table_40430 WHERE "Event" = 'jiu-jitsu vs martial arts'
What is the Round for the jiu-jitsu vs martial arts?
CREATE TABLE table_40430 (
    "Res." text,
    "Record" text,
    "Opponent" text,
    "Method" text,
    "Event" text,
    "Round" text,
    "Time" text,
    "Location" text
)