Their best record against the Mets was in 2014 when the Nationals went 15 - 4 .
The last time the Nationals went 12 - 7 against the Mets was in 2013 .
Nationals ' best record against Mets Mets was in 2014 when Nationals Nationals went 15 - 4 .
The last time the Nationals went 12 - 7 against the Mets was in 2013 .