Allen Park — Reflecting on the Lions' 14-6 loss at Arizona on Sunday, Lions coach Jim Caldwell said Monday he's happy with the play-calling but is concerned about the offensive inconsistency.

For the first time since 2009, the Lions were held without a touchdown, mustering only two field goals in the first half against the Cardinals' pass defense, which was ranked 30th in the league.

Golden Tate, who led the NFC in receiving yards, had just two catches on two targets, for 41 yards. Asked why Tate, who was averaging seven catches per game, didn't see as many targets, Caldwell explained that there are a number of factors besides play-calling.

"Every game is different. There may be some games where he gets 10; there may be some games where he gets one," Caldwell said Monday in his weekly press conference. "Because of the fact that we had a number of guys out there capable of getting the ball — (tight end Eric) Ebron got a few more (targets) this week and a couple guys got a few more — it changes from week to week."

Caldwell said offensive coordinator Joe Lombardi wasn't to blame for the lack of offense and that he's comfortable with what Lombardi has done.

"Certainly, I'm satisfied with it. Joe does a good job," Caldwell said. "One of the things we've always been focusing in on, particularly this time of year, is making sure we run the ball better. This game, we ran the ball pretty well."