LOS ANGELES — Michael Conforto, the .169-hitting left fielder whose hold on a roster spot seemed to be slipping out of his hands, capped a bizarre three-run, eighth-inning rally with a two-out RBI single to lift the Dodgers to a 6-5 come-from-behind victory over the New York Mets on Thursday afternoon.

Mets starter David Peterson gave up three runs and seven hits in seven innings and handed a 5-3 lead to setup man Reed Garrett, who had allowed only two earned runs in 26⅔ innings of 27 games this season for an 0.68 ERA.

But Garrett walked Mookie Betts to open the eighth, and Will Smith roped an RBI double into the left field corner to cut New York’s lead to 5-4. Teoscar Hernández flied out to deep center, advancing Smith to third, and the Mets brought their infield in for Andy Pages, who

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