Rory McIlroy leads the Memorial Tournament by three shots after opening round . The Northern ##er shot an nine - under par 63 in Ohio City . ` I wear spikes , so sometimes your foot can get stuck in the ground The world No . 6 broke off his engagement to tennis star Caroline Wozniacki last week . Wozniacki was knocked out of the US Open in the first round earlier this week .
Rory McIlroy leads the Memorial Tournament by three shots after opening round . The Northern ##er shot an nine - under par 63 in Ohio City . The world No . 6 broke off his engagement to tennis star Caroline Wozniacki last week . Wozniacki was knocked out of the US Open in the first round earlier this week .