The Offaly man was ranked 12th in the world before the US Open.
Shane Lowry has slipped to 16th in the Official World Golf Rankings.
The Offaly man dropped four places after missing the cut at the US Open at Oakmont last week.
Lowry reached a career high 10th place last month, following his tied second finish at the Truist Championship, but has also missed two of his last five tournament cuts.
He can return to the top-10 as he competes at the PGA Tour's Travelers Championship tomorrow.
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