The National Football League is not yet finished with the second week of the preseason and a number of injuries will play a role in determining several teams’ postseason hopes. The biggest of those injuries may be to Miami Dolphin’s QB Ryan Tannehill who suffered a season-ending knee injury in a non-contact drill during a Dolphins’ practice. With Tannehill out, head coach Adam Gase and the Dolphins’ chances of repeating their 10-6 mark of a year ago is highly unlikely. Miami signed former Chicago Bears quarterback Jay Cutler as a result of Tannehill’s injury.

The Tannehill injury is not the only one that will have an impact on the Dolphins. Linebacker Raekwon McMillan, a second-round draft pick out of Ohio State was the projected starter for Miami at middle linebacker. At 6-foot-2 and 248 pounds, McMillan is a rare blend of size, speed, and tenacity that would have been a phenomenal addition to the Dolphins defense. Unfortunately, McMillan will also miss the season after suffering a knee injury in Miami’s first preseason game against Atlanta.

McMillan tore the ACL in his right knee while covering a punt for Miami. The play occurred before the former Ohio State star ever played a snap on defense. Now, the Dolphins will likely turn to veteran Lawrence Timmons or Mike Hull, former Butkus Award winner at Penn State.

The Washington Redskins also face a season where they may be without a few of their defensive starters. Linebacker Trent Murphy will miss the entire 2017 season after tearing the ACL and MCL in his left knee. The Redskins would have been without Murphy for the first four games anyway, but now will not have him for the season. Murphy will serve a four-game suspension for violating the NFL’s policy on performance-enhancing drugs. He can still serve the suspension while on injured reserve.

In addition to Murphy, the Redskins will be without safety Su’a Cravens for the remainder of the preseason. Cravens, a second-year safety out of USC, had surgery to repair meniscus damage in one of his knees. He is supposed to be ready for Week 1 when the Redskins take on NFC East foe Philadelphia on Sept. 10. The 6-1, 244-pound Cravens played just three snaps in Washington’s first preseason game and has a history of knee troubles. The Redskins are hopeful that Cravens can make it through the entire season. Time will tell…

Guest Post Contributed by Sports Injury Analyst