The eventual winning run in the first-round contest scored on a two-out throwing error by shortstop Hanley Ramirez (Florida Marlins).
One run scored on a wild pitch by losing pitcher Edinson Volquez (Cincinnati Reds) and the other on a single by Sharnol Adriana before Ramirez's error.
Winning pitcher Sidney Ponson (1-0) yielded two earned runs and three hits in four innings, while Leon Boyd got a save despite walking two batters in the bottom of the ninth.
The heavily-favored Dominicans scored on Miguel Tejada's solo fourth-inning homer, and Ramirez's fifth-inning sacrifice fly.
Volquez (0-1) gave up three unearned runs and two hits in three innings.
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