Tyrann Mathieu regrets stating that the Kansas City Chiefs might have "one of the most toxic fan bases in all of sports."
The Chiefs safety apologized Saturday, telling reporters, "Obviously that was a mistake on my part." He added: "I haven't had the season I've wanted to have; I think as a team we could say the same. Frustration tends to build up."
This article will be updated to provide more information on this story as it becomes available.
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