Rory McIlroy disclosed what he shot during a practice round at Oakmont ahead of the U.S. Open, and its 'Toughest Test in Golf' title seems to hold.

Rory McIlroy Makes Major Revelation Before US Open originally appeared on Athlon Sports. Rory McIlroy has been struggling in recent tournaments. Before arriving at Oakmont, he competed in the RBC Canadian Open, where he carded rounds of 71 and 78 to miss the cut. It was one of his worst 36-hole performances in recent years.

Rory McIlroy’s driver became the story at last month’s PGA Championship and he is determined not to let that happen at this week’s U.S. Open. McIlroy’s driver was deemed non-conforming on the Tuesday before the year’s second major and he struggled to a tie for 47 th.