It's not immediately clear how they plan to replace Sitton in the lineup, but they have several candidates -- including Lane Taylor and Don Barclay. It's also possible they could move right tackle Bryan Bulaga to guard and play rookie second-round pick Jason Spriggs at Bulaga's old spot. Or they could move Tretter to guard from center once Corey Linsley is recovered from the hamstring injury that had him on the physically unable to perform list all of training camp.
Rob Demovsky wrote: