Tom Watson has backed Rory McIlroy to complete a career Grand Slam by winning the Masters this week.
McIlroy has not won a major since claiming the PGA Championship for a second time in 2014, although he finished fourth at Augusta last year — his best finish at the tournament.
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The Masters remains the only major to elude McIlroy, who is from Northern Ireland. Watson, a two-time winner, is competing for the final time this year.