Tyrann Mathieu on Chiefs fans: 'This might be one of the most toxic fan bases in all of sports' | CBS Sports Headlines Tyrann Mathieu on Chiefs fans: 'This might be one of the most toxic fan bases in all of sports' Mathieu was seemingly defending teammate Anthony Hitchens and … Continue reading Tyrann Mathieu on Chiefs fans: 'This might be one of the most toxic fan bases in all of sports'