Rory McIlroy: Will he keep his No. 1 spot? - Sports Illustrated

Is Rory McIlroy worried about losing No. 1 spot to Jordan Spieth?

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1:11

On SI Now, associate editor of Golf Magazine Jessica Marksbury explains how Rory McIlroy is motivated to maintain his No. 1 spot on the World Ranking over Jordan Spieth despite his recent injury.