Who is the only player to win the MVP Cy Young and world series MVP in the same season?

It's an impressive listing:

Sandy Koufax: 1963, 1965, 1966; four no-hitters; 1963 & 1965

Bob Gibson: 1968 & 1970; 1971; 1964 & 1967

Randy Johnson: 1999, 2000, 2001, 2002; 1990 & 2004; 2001 (co-winner)