AJ MacGinty 's penalty put the USA on the scoreboard .
USA followed it up with a try from scrum - half Mike Petri after Takudzwa Ngwenya 's electric break , trimming the Wallabies ' lead to 14 - 10 by half - time .
AJ MacGinty 's penalty put the USA on the scoreboard and they followed it up with a try from scrum - half Mike Petri after Takudzwa Ngwenya 's electric break , trimming the Wallabies ' lead to 14 - 10 by half - time .