<prompt> Tlatša polelwana ye e latelago: Niemann o thopile Sefoka sa Mark H. McCormack sa 2017 ka go ba sebapadi sa maemo a godimo ka go World Amateur Golf Ranking mafelelong a sehla sa phadišano sa selemo, ka go realo a hwetša sebaka sa go tsenela  <response>: 2018 U.S. Open le go tsenela 2018 Open Championship. O thopile 2018 Latin America Amateur Championship e bile a tsenela 2018 Masters Tournament. 