BOSTON (CBS) – After Brandon Bolden made the Patriots roster following an impressive training camp and preseason, many saw the undrafted running back as this year’s feel-good story.

Now, that story has a dark cloud surrounding it.

On Friday, the NFL suspended Bolden four games for violating the league’s policy on performance enhancing drugs.

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The suspension will begin immediately meaning Bolden, who has been out since suffering a knee injury in Week 6, is eligible to return to the Patriots active roster following New England’s December 2 match up with the Dolphins.

Bolden was a solid contributor for the Patriots when he was on the field, rushing for 234 yards and two touchdowns in six games. He ran for a career-high 137 yards and a touchdown in New England’s 52-28 Week 4 win over the Bills in Buffalo.

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Tune in to the Patriots-Bills game Sunday afternoon at 1pm on WBZ-TV and 98.5 The Sports Hub. Pre-game coverage begins at 10am on 98.5 with Patriots Preview, and 11:30am on WBZ-TV with Patriots GameDay. Following the game, stay tuned for three hours of postgame coverage on the Hub, and to Patriots 5th Quarter on WBZ-TV.