IRVING, Texas (AP) — Rolando McClain dances around questions about how much he loves football and whether he enjoyed training camp.

The new Dallas linebacker keeps getting asked because he walked away from the game twice in Baltimore after Oakland dumped its former top 10 pick just three seasons into his career.

Ready or not, McClain is expected to start Sunday's opener against San Francisco. The Cowboys apparently have seen enough to believe he's the replacement for Sean Lee, whose season-ending knee injury led them to give the Ravens a seventh-round pick.

The Cowboys are trying to improve the league's most porous defense from a year ago. Rod Marinelli replaced Monte Kiffin as defensive coordinator a year after both joined the staff to implement a scheme change.

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