Five things to watch for in tonight’s preseason opener at Pittsburgh:

1. Will the offensive line protect Matthew Stafford long enough so he can pass the ball? The line has been bolstered with LG Rob Sims and a healthy Stephen Peterman at right guard. Right tackle is still up for grabs between Gosder Cherilus and Jon Jansen.

2. Can rookie RB Jahvid Best run through the Steelers’ defense? Running backs are difficult to judge until they can really be hit. He has looked good at camp, but ...

3. Will the new-look defensive line be able to dominate? This is key to the Lions’ success this year and with all the talent on the line, it will be disappointing if they don’t.

4. Along with running backs, linebackers are tough to judge until they get a chance to hit someone in another jersey. DeAndre Levy will sit out with a bad back. Keep an eye on Zack Follett on the weak side.

5. Speedy corners Chris Houston and Jonathan Wade have had some success at camp. Will they translate to live action?