The first Seattle Seahawks injury report of the week spells more trouble at cornerback.

Two-time Pro Bowl corner Devon Witherspoon was listed as not participating in practice Wednesday due to a knee injury, four days ahead of Seattle’s Week 2 road trip to take on the Pittsburgh Steelers.

Stacy Rost: Three big questions for Seattle Seahawks in Week 2

The Seahawks already had uncertainty at the position with head coach Mike Macdonald not committing to Riq Woolen starting after a rough showing late in Seattle’s Week 1 loss to the San Francisco 49ers.

The secondary was also the source of the Seahawks one other player who did not practice Wednesday: rookie safety Nick Emmanwori, who suffered a high-ankle sprain early in his NFL debut last weekend.

Emmanwori is almost certainly not a cons

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