Junior Caminero hit a go-ahead, two-run homer in the sixth inning as the Dominican Republic beat Nicaragua 12-3 before a crowd of 35,127 to conclude the first day of Pool D at Miami's loanDepot Park.
Julio Rodriguez and Oneil Cruz also went deep for the Dominican Republic, which broke it open late after Caminero's homer snapped a 3-all tie.
Manny Machado's double in the sixth preceded Caminero's blast. Rodriguez's leadoff homer and Cruz's three-run blast highlighted a six-run eighth.