According to Ian Rapoport, while Richardson has been tagged as questionable for tonight's game against the Cardinals, "there is optimism that he plays." Still, he is listed as a game-time decision so his playing status will come down to the wire.
It's a wonderful matchup for Richardson and the rest of the Seahawks wide receivers tonight versus Arizona—fourth-best according to our aFPA metric. If Richardson is out, Tyler Lockett would assume No. 2 WR duties all to himself.
Lockett has out-targeted Richardson the past three games (23-12) and has caught 12 of those targets compared to 11 for Richardson. However, Richardson has out-produced him in yards (207 to 160) and touchdowns (3 to 0).