MIAMI - Nelson Cruz's two-out RBI single broke a seventh-inning tie, and the Dominican Republic overcame an early four-run deficit to beat Italy 5-4 Tuesday in the World Baseball Classic.

The Dominicans (4-0) remained unbeaten and advanced to a winner's-bracket game Thursday night in the double-elimination second round.

Robinson Cano had three hits, including his second homer of the WBC with a drive off the upper-deck facade in right field. Jose Reyes also homered for the Dominican Republic.

Chris Colabello hit a three-run homer, his second, to give Italy a 4-0 lead in the first inning.

The Dominicans trailed 4-2 in the seventh, when they loaded the bases with one out on consecutive singles by Reyes, Erick Aybar and Cano off Pat Venditte (0-1).

Edwin Encarnacion walked to force in a run, and Hanley Ramirez tied the game with a sacrifice fly. Cruz followed with a broken-bat, two-out single to give the Dominicans their first lead.

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Cruz has six RBIs in four WBC games.

The crowd of 14,482 was festive for the opening game in Miami, with horn-honking and chanting by Dominican fans who created a steady din. The retractable roof, closed for all but eight Marlins games last year, was open on an 80-degree afternoon.

Pedro Strop (2-0) threw a scoreless seventh. Fernando Rodney, who has yet to allow a hit in four appearances, pitched a hitless ninth for his third save.

Five relievers limited Italy to one hit and no runs over the final 4 2-3 innings.

Early wildness plagued Dominican starter Edinson Volquez, who threw only one of his first 13 pitches for a strike as he walked the bases loaded. Alex Liddi's sacrifice fly made it 1-0, and Colabello followed with a homer.

Volquez allowed four runs in 4 1-3 innings.

Tiago Da Silva went 5 1-3 innings for Italy and allowed two runs, both on homers. The Italians play in a losers'-bracket game Wednesday.