Detroit Lions safety Tracy Walker was asked about the unnecessary roughness call against him when he collided with Packers receiver Geronimo Allison on the first play of the third quarter of a 23-22 loss to Green Bay.

Walker was flagged for 15 yards on the incomplete pass, and later said he was just going for the ball, criticizing the officiating while explaining it.

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Walker said he wasn’t trying to make contact with Allison and was vying to intercept Aaron Rodgers’ pass.

They collided, but he said he was “attacking the ball.” When asked if the defensive back has the right to go for the ball in that case, referee Clete Blakeman explained what he saw in a postgame pool report.

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