Drew Waters homered on the first pitch of the bottom of the first inning, Bobby Dalbec hit a grand slam in the fifth and Jo Adell and Brent Rooker also went deep, leading the United States over the Netherlands 9-0 Saturday at Guadalajara, Mexico, in the Americans' opening qualifier for next year's Olympic baseball tournament.
Cody Ponce (1-0) and four relievers combined on a two-hitter to get a win in the Group A game at the Premier12 tournament.
The top two nations in the group, which includes the Dominica Republic and Mexico, advance to the super round in Japan.