London - Brad Barritt signed a new contract with Saracens two days after captaining his team to England's Aviva Premiership title.
South Africa-born Barritt has spent the last decade at Allianz Park and the centre will extend his stay by a further two seasons.
The 31-year-old was a key figure for Saturday's Premiership final victory over Exeter at Twickenham.
Former England international Barritt was also captain of the Saracens double-winning side in 2016.
"It's pretty much a no-brainer for me. Being part of Saracens has been an amazing journey," Barritt said.
"I think the hallmark of our success as a club over the past few years has been the stability and the consistency of the squad we've kept together.
"I'm delighted to stay on the train and be part of this fantastic club."