The latest edition of a global series that has raised more than $63 million for charitable causes will be played on the Edinburgh Course, a layout designed by the 81-year-old Player.
Ghim became the 19th player to win all four of his matches in the event.
Nick Hardy of Illinois finished at 2-1-1 by beating Harry Ellis of England and Florida State, 3 and 2, and Norman Xiong of Oregon posted the same record by routing Harry Hall of England and UNLV, 8 and 7.
McNealy and David Wicks of Europe and Jacksonville University earned the Michael Carter Award, given to the player on each team who best represent the ideals of sportsmanship, integrity and upholding the game.
Mickelson kept his name in the field until the last minute in the hope of a weather delay at Erin Hills, but skies were clear at the start of the opening round.
During the second round, a 94-year-old man from Wauwatosa was reported to be non-breathing and without a pulse in a grandstand on the sixth hole at about 1:30 p.m., according to the Washington County sheriff’s office.