Following the suspension being reported, Martin and the team both released statements.

This past offseason, Martin signed a five-year deal worth $35.75 million with $15 million guaranteed.

"I sincerely apologize to the Glazer family, General Manager Jason Licht and the entire Tampa Bay organization, my teammates and our tremendous fans", the running back said, via the team's official website. He was then excused from Wednesday's practice, but Bucs coach Dirk Koetter did not give a reason why. "I don't know what he did, but I'm sure he'll come back strong next year".

The fifth-year pro said he made a decision to enter a treatment facility "and receive the help I truly need" after discussing the matter with people close to him, including Bucs coach Dirk Koetter.

Martin, a former first-round draft pick, has rushed for just 421 yards and three touchdowns in eight games played this season.

Koetter reiterated his defense of Martin on Monday.

"Right now, I'm not going to say anything about who's going to play this week because I don't want to do Carolina any favors as to who we're going to play", Koetter said. I asked, 'Is everything OK?' He said he was fine.

Bucs RB Doug Martin failed a drug test and is being suspended four games starting now, per league sources. "I can't speak on that". At the end of the day, we've got to find a way to make it happen. "I really have no good answer for you on that". And the overall average of 3.5 yards per carry paints a picture that involves injuries on the offensive line as well as games where passing was more effective or necessary. "Everything that's beyond my reach, I can't control".