As of Friday, Lions running back Kevin Smith said he was expecting to play on Sunday night vs. the New Orleans Saints. Despite an ankle injury that he suffered on Thanksgiving, Smith practiced lightly on Thursday and again on Friday, indicating that he might be available for the Sunday Night Football game.
Smith must not have had any setbacks in those light practices, because today a league source is corroborating Smith's expectation from Friday:
@ProFootballTalk
ProFootballTalk Per league source, Lions running back Kevin Smith (ankle) is expected to play on Sunday.
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If Smith can't go, the Lions will turn to Maurice Morris again to handle the workload.