The Miami Dolphins will be without both starting offensive tackles as they face the San Francisco 49ers on Sunday, according to a report. The Dolphins ruled right tackle Austin Jackson out of the game in their final Week 13 injury report on Friday as he deals with an ankle injury, but left tackle Terron Armstead was listed as doubtful. The three-time Pro Bowl selection strained his pectoral muscle against the Houston Texans last week and, while it was not likely, there was at least some level of hope that he would be able to play through the injury; Armstead also has a toe injury that has limited him this year but he has been able to play through it for the most part.