The Miami Herald confirms Dolphins LT Jake Long has been diagnosed with a sprained MCL, and will be sidelined 1-3 weeks if the sprain is mild.Long could miss 3-4 weeks if the sprain is moderate — and 4-6 weeks if his MCL is torn — but neither the Herald nor Palm Beach Bost expect Long's MRI to turn up anything significant. Regardless, Long is likely to be questionable for Opening Day, and that's bad news for a team that will be starting a rookie quarterback against a Texans team that was amongst the league leaders in sacks last season