The Dallas Cowboys offensive line was already a question mark heading into the offseason. But now, depending on the decision that Zack Martin decides to make, it could end up being a downright concern.

Dallas has many upgrades to make this offseason, but defensive line should rank high on the list of things to do.

Bottom line: The Cowboys have never won a Super Bowl without a Top 10 defense. In their five Super Bowl seasons, in fact, they finished in the Top 8: What were the Cowboys ranked during last season's 7-10 disaster? 31st, including 29th against the run.