What's Wrong With the D-Backs?
Hitting. Their main leftfielder is hitting .214. He's holding down the position because the other guy they've tried there is hitting .182. Their first baseman is hitting .203; his backup is hitting .179. And these are the hitters' positions; any moose can play leftfield. The centerfielder is hitting .174.
Things are even worse when you consider that Chase Field is definitely a hitters' park; according to ESPN
, it's the top park in the majors, with 43% more runs scored in D-Backs home games than on the road. Which means that those ugly batting averages are uglier than they would be in a normal ballpark.