Zach Kerr's injury will linger into the regular season.

Broncos coach Vance Joseph confirmed the defensive lineman is out for two weeks after sustaining a bruised knee in Saturday's preseason game against the Green Bay Packers.

Asked if Kerr can be ready in time for Opening Day on Sept. 11, Joseph said, "[That's] pushing it."

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Kerr, one of several Broncos who went down during the contest, had an MRI that revealed no structural damage to his knee. He's likely to return for Denver's Week 2 showdown with the Dallas Cowboys.

Signed as a free agent this offseason, Kerr had enjoyed a solid summer operating as a de-facto starting defensive end with Derek Wolfe (ankle) and Jared Crick (back) also battling injuries. Wolfe and Crick are expected to play in Week 1.

Preseason standout Shelby Harris will start at DE for Kerr in the team's final exhibition contest against the Cardinals on Thursday.

For more Broncos news, follow Zack Kelberman on Twitter: @Kelberman247