Tennessee Titans quarterback Marcus Mariota suffered a sprained MCL in his left knee after being hit by Miami Dolphins defensive end Olivier Vernon.

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DAVIE, Fla. (AP) -- Miami Dolphins defensive end Olivier Vernon says he has been fined by the NFL for a late, low hit on Titans quarterback Marcus Mariota and plans to appeal.

Vernon declined to say Wednesday how much he was fined. He hit the Tennessee rookie's knee Sunday and was criticized afterward by Titans coach Ken Whisenhunt, who said it appeared Vernon was trying to hurt Mariota.

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Mariota sprained the MCL in his left knee but didn't miss a snap. He finished the game with a brace on his knee.

Vernon apologized after the game to Mariota, who said he didn't think the hit was malicious. On the play, Vernon drew the first of two penalties he received for roughing the passer.

Miami won 38-10 under new interim coach Dan Campbell.