Roy Helu Jr. isn’t a rookie, but he took most of the early carries for the Redskins offense. (Mark Zaleski/Associated Press)

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NASHVILLE — The Washington Redskins had three rookies start in their secondary in their preseason opener Thursday night here against the Tennessee Titans.

Cornerback David Amerson and safeties Bacarri Rambo and Phillip Thomas were in the starting lineup. That came with veteran safety Brandon Meriweather and cornerbacks DeAngelo Hall and Josh Wilson not playing.

E.J. Biggers, signed as a free agent in the offseason, was the Redskins’ other starter in the defensive backfield.

Chris Neild started for Barry Cofield at nose tackle.

Roy Helu started at tailback with Alfred Morris not playing. Tom Compton started at left tackle in place of Trent Williams.

Aldrick Robinson started alongside Josh Morgan at wide receiver, with Pierre Garcon among the players withheld by the Redskins.

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