FWIW The Nats offense has been cratering since halfway through last season.
2017 games 1-81: 441 runs scored, for an average of 5.44 per game.
2017 games 82-162: 371 runs scored, for an average of 4.58.
In 2017 we scored more than 10 runs a total of 21 times, but only 6 of those times were in the second half.
We were also shut out 7 times, and every one of them were in the second half.
As of Monday night (so, before the beat-down against the Mets) we'd scored 460 runs in 106 games, or an average of 4.34 runs per game. Still down from the second half of last year, but not down by all that much. We'd also been shut out 10 times in 106 games, which is pretty brutal, but also not all that far off of the second half of last year. 10/106 = shut out once every 10.6 games. Last year's shutout rate was one shutout every 9.33 games if you count from Game 87 when we had our first one, and if you're counting from the halfway point, that's one shutout every 8.5 games.
Either way, the Meh offense has been a thing for a while, not just this season. Or maybe the first half of 2017 was over-performance and the second half was just the true level of talent on this team. The team has been getting by on its pitching for a while, and once the pitching fails, they can't get by.
Not sure what this means in the context of Davey Martinez but I like math.