Ricardo Pepi scored from Christian Pulisic’s pass in the fifth minute, Matt Turner saved a penalty kick and the United States won 1-0 at Jamaica in a CONCACAF Nations League quarterfinal first leg, the Americans’ first competitive match under coach Mauricio Pochettino. The second leg of the total-goals series is Monday in St. Louis. The winner advances to a March 20 semifinal at Inglewood, California. The United States won the first three editions of the tournament. Pepi scored his 12th goal in 32 international appearances, mis-hitting his shot but putting the ball in off goalkeeper Andre Blake’s far post.