Tennessee Titans quarterback Marcus Mariota is reportedly "not expected to play" Sunday against the Miami Dolphins as he continues to suffer from a hamstring injury, according to ESPN's Adam Schefter.
Mariota hasn't missed many games in two-plus-year career (five), but he has already had to deal with a few injuries. A broken fibula led to an early end to his 2016, while the hamstring issue is one of the first real nagging soft-tissue injuries he's nursed.
When healthy, the 23-year-old has proved to be one of the top young quarterbacks in the NFL.