After a blistering day of high blood pressure readings, Dolphins fans can relax and take a breath.
During the team's first 11-on-11 session, Tannehill scrambled to the right and fell at the end of his first-down run.
Without Tannehill, who has been wearing a knee brace, the Dolphins have virtually no chance to compete with birthday boy Tom Brady and the New England Patriots in the AFC East, assuming anyone in the National Football League can seriously challenge the defending Super Bowl champions at this point. He stayed on the ground at least 15 seconds before rising and slowly walking off the field.
Matt Moore has shown himself to be a capable backup quarterback, who has experience during the regular season and in the playoffs.
The Miami Herald is reporting that Tannehill hyperextended his left knee and that "there is the possibility of poster cruciate ligament damage".
Tannehill was brought back to the locker room for further evaluation.
The good news of course is that Tannehill should be ready to go for the season but he is still going to miss some time and likely will not participate in this weekends scrimmage at Hard Rock Stadium.
The Miami Dolphins, perhaps the loaded Patriots' most formidable AFC East foe, suffered what could be a potentially season-altering blow Thursday.