That leaves just two players still eligible for arbitration in lefty starter Drew Pomeranz and lefty reliever Fernando Abad.
Recent history suggests the Red Sox will work out deals with those players by February. Boston hasn't gone to arbitration with a player since Rolando Arrojo back in 2001.
This is the first year Bogaerts and Bradley were eligible for arbitration. Bradley is a Super Two player, meaning he is eligible for arbitration for three more offseasons.
It was also the first arbitration-eligible offseason for Holt, Leon and Thornburg, who figures to be a key performer in the bullpen after being acquired from the Brewers in December.