Triston Casas injury update: Red Sox slugger suffers rib fracture, will be out 'a while'
On the position player side, the Red Sox are already without second baseman Vaughn Grissom (hamstring strain), utility man Romy Gonzalez (wrist sprain), outfielder Tyler O'Neill (concussion), and shortstop Trevor Story (shoulder surgery). Third baseman Rafael Devers has been in and out of the lineup with shoulder and knee trouble as well.