On August 31, the Diamondbacks were in first place in the N.L. West with a one-game lead.
They’re 4-11 in September and have fallen to to 4½ games back and into third place.
To explain all this, I asked Jim McLennan, the manager of our SB Nation D-backs site AZ Snakepit, to update us on his team.
Things have gone radically south for the Diamondbacks since the last time these two teams met. Arizona is only 22-24 over that time, and has struggled in particular over the last few weeks.