Amateur Jordan Niebrugge hung up a 2 - under - par 33 - 37 = 70 for his final round of The Open Championship .
Amateur Jordan Niebrugge posted 11 - under 277 .
Amateur Jordan Niebrugge hung up a 2 - under - par 33 - 37 = 70 for his final round of The Open Championship and posted 11 - under 277 .