OLYMPIA FIELDS, Ill. – Jon Rahm, the powerful Spaniard who sits atop the World Amateur Golf Ranking, woke up early Thursday morning outside Chicago and was tired. Beat. Worn down from being up very early a day earlier to ready for a playoff just to get to match play at the 115th U.S. Amateur. Weary from having to go 21 holes to survive his first-round match against Arizona's George Cunningham.