Jack Nicklaus gave Rory McIlroy some advice on winning at Augusta

Rory McIlroy may have been called a "badass" by Jordan Spieth, but he will heed Jack Nicklaus' advice to employ a conservative approach as he tries to complete the career grand slam.

McIlroy needs to win the Masters to join Nicklaus, Tiger Woods, Gene Sarazen, Ben Hogan and Gary Player in having claimed all four major titles.