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Shane Lowry has had an impressive performance at Oakmont, and is staring down the chance to become the first player from the Republic of Ireland to win the U.S. Open. The 29-year-old Irishman only has one PGA Tour victory, but finds himself on the cusp of his first major win, with a four-shot lead heading into Sunday’s final round. Lowry isn’t the only golfer in his family, his younger brother Alan is also an avid golfer, hoping to follow in his older brother's footsteps. Click through the gallery to see, and learn more about Lowry and his brother. (Twitter/AlanLowry59)