document: Loosehead Barrington, 26, has featured 82 times since joining Sarries from Jersey in 2013, and has agreed a three-year contract at Allianz Park.
  USA international Lamositele, 21, has signed a new two-year deal.
  "Both Richard and Titi are valuable members of our squad," director of rugby Mark McCall said.
summary: Prop forwards Richard Barrington and Titi Lamositele have signed new deals with Premiership and European Champions Cup winners Saracens.