Thursday afternoon's 7-1 loss to the Angels at Chase Field dropped the D-backs to 32-34 on the season.
The last time the D-backs had a breakeven record was April 24, when they were 8-8. Eight times since then they've entered a game just one below .500, and all eight times they've lost.
"I don't know if anybody is even thinking about it in there," D-backs manager Chip Hale said, referring to the clubhouse. "We just didn't play well enough to win and they did."
Allen Webster (1-1) was solid through five innings for the D-backs.