Sebastian Telfair is now behind bars ... TMZ Sports has learned the former NBA star has officially begun his prison sentence.

Trump ... you’re definitely going to want to pardon me," former Celtics player Sebastian Telfair said this week.

Sebastian Telfair asks Donald Trump for a pardon hours before serving six months in prison for violating a plea agreement.

Former NBA star Sebastian Telfair pleaded for a pardon from President Donald Trump as he's set to enter prison for violating ...

Former Brooklyn hoops star Sebastian Telfair is calling on President Donald Trump to give him a last-second pardon before he ...

Former NBA star Sebastian Telfair is reportedly looking to the highest office in the land to avoid his lengthy prison stay ...

Sebastian Telfair tells TMZ Sports he wants Donald Trump to help him avoid a lengthy stay behind bars this year.

Former NBA player Sebastian Telfair asked President Donald Trump for a pardon as he started a six-month prison sentence.

Former NBA player Sebastian Telfair is pleading for President Donald Trump to pardon him and keep him from going to prison.

Brooklyn high school star and former NBA player Sebastian Telfair wants President Trump to keep him out of prison with a last ...

Sebastian Telfair, a former NBA player, is set to go to prison. He broke rules related to a healthcare fraud case. Telfair ...

The former NBA player was accused of violating one of his parole terms , leading to a six-month stint in a federal prison in ...