Entering training camp, the Lions secondary was a big question mark. After two preseason games (the Lions won 25-20 at Denver on Saturday night), it remains the biggest question on the squad.

They played without starting safety Louis Delmas (groin) who is a huge question mark. He can’t practice if his groin is sore. It’s not conditioning, the groin is still an issue. He hasn’t practiced since Wednesday.

The Lions were also without cornerback Jonathan Wade (broken finger), who has a solid chance to start.

The defense gave up 177 passing yards to Broncos’ starting quarterback Kyle Orton in the first half. Even without Delmas and Wade, they must do better than that.

Cornerback Chris Houston was called for pass interference. He’s looked better in camp than he did on the field Saturday night.

Pressure from the defensive front four can only help the secondary, but they have a job to do also and can’t depend on the line to bail them out on every play.

There’s plenty of time left until the regular season starts in Chicago on Sept. 12. Will the secondary be ready to play? We shall see.

(Follow me on Twitter @paulapasche.)