data-mm-id=”_yho68p142″>The 2019 season has brought NFL fans many unexpected developments. The Patriots are 10-1, but have been carried by their defense. Lamar Jackson is an MVP candidate and has looked unstoppable over the last month and change. The Colts are in contention for the division with Jacoby Brissett under center, and the Bengals (not the Dolphins) are far and away the worst team in the league. The list goes on.Yet I contend the biggest surprise of this season goes not to Jackson's breakout or the Colts recovering from the most shocking retirement in recent NFL history, but rather to one Ryan Tannehill down in Nashville. The former Dolphins QB joined the Titans over the offseason to very little fanfare; most of the attention was focused on Marcus Mariota, the former No.…