Glendale, AZ — Six turnovers, including five in the first half, prove too much for the Cowboys to overcome as they fall to the Cardinals, 12-7.
Dallas' Tony Romo completed 7 of 10 passes for 142 yards but was undone by two fumbles by his receivers.
"Obviously, turnovers are going to get you beat in this league. It is paramount that we don't let that happen again," Romo said. "We are going to have some hard teaching sessions going over this tape, and it will be good for guys."
The Cowboys scored on a 5-yard pass from fourth-string quarterback Alex Tanney to Gavin Escobar with 10:55 to play.
Dallas coach Jason Garrett called the six turnovers "inexcusable" but he praised the defense for its response to that adversity.
"To have six turnovers and give up 12 points is pretty darn good," he said.
The Cowboys now return to their practice facility in Valley Ranch as they prepare to host Cincinnati at AT&T Stadium on Saturday.