Devon McTavish preserved the lead when he raced back to clear Shea Salinas’ shot off the line after Wells had been beaten.
San Jose played the last seven minutes a man down after Riley was given a red card for a two-footed tackle on McTavish.
Then Emilio tallied his eighth goal of the season, assisted by Marcelo Gallardo, in the 88th minute to finish off the struggling Earthquakes (3-8-2, 11 points).
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