They better get started on that soon, because their former fortress proved to be a prison once again Saturday, when second-half goals from Jonathan Lewis and David Villa lifted New York City FC to a 2-0 victory before an announced crowd of 25,667.

They threatened repeatedly in a scoreless first half, their most dangerous chance coming in the 40th minute when New York keeper Sean Johnson deflected defender Pele van Anholt’s 20-yard blast over the crossbar with a leaping one-handed save, one of five he had on the night.

And the Galaxy missed him with forward Gyasi Zardes, invisible for much of the night, managing just one late shot on goal.

The swarming Galaxy did a better job defending, harassing New York all over the field and preventing the league’s second-most-potent attack from establishing any rhythm.

But Lewis broke the spell in the 54th minute, dribbling deep in the Galaxy end, avoiding a poor challenge from Jermaine Jones , then pulling up to take a long right-footed shot that beat keeper Brian Rowe, struck the bottom of the crossbar and dropped over the goal line.