There's a major hole on the career accomplishments list for the world's 10 top-ranked golfers this week at Augusta National — none of them owns a Masters champion's green jacket. It's the first time since the global rankings began in 1986 that the entire top 10 arrived at the year's first major tournament and none of them had ever won the Masters, including new World No. 1 Justin Rose of England. Third-ranked Rory McIlroy of Northern Ireland, a four-time major winner, needs a Masters win to become only the sixth golfer to complete a career Grand Slam. There's a trio of top-10 Americans with major wins lacking one at Augusta National, including second-ranked Dustin Johnson, three-time major winner Brooks Koepka (fourth) and 2017 PGA Championship winner Justin Thomas (fifth).