Former Detroit Lions running back Jahvid Best's civil lawsuit against the NFL and helmet makers Riddell and Easton-Bell Sports has been dismissed.

A document obtained by ESPN.com showed Best's case against the league was dismissed from the Wayne County Circuit Court in Michigan on May 6 due to a nonservice dismissal without prejudice.

This likely means that Best, the plaintiff, did not serve the defendants in a defined period of time. This led to the case's dismissal, but Best can refile the suit. It is unclear if he will do so. His attorney in the case, Bret Schnitzer, did not return messages and an email seeking comment Thursday.

Best spent last season at his alma mater, Cal, as a student assistant coach working with the Golden Bears' running backs. Best still holds school records for kick return average and the most 200-yard rushing games.

Schnitzer told ESPN.com in January, when the case was filed, that one of the purposes of the suit was to set up a medical fund for Best "in order to deal with future medical conditions out of this concussion syndrome."