It's definitely, mostly, random small sample stuff. Any reliever can have a bad game or two or a bad week. It's all in the timing. And tonight the Phillies came for Diaz (which they also have before).
I didn't get to watch yesterday but I had the impression Strahm and Hoffman were throwing strikes and ahead in counts, but location/command was off at crunch time.
I vote for winning the series in New York, but yes, it's good to have the trip home in pocket.