Secured: Test your knowledge of the NFL's franchise tag
Mike Ehrmann / Getty Images Sport / Getty
The 2018 NFL franchise tagging period is in full swing - officially opening on Monday - with Miami Dolphins receiver Jarvis Landry becoming the first potential unrestricted free agent to be locked down for the upcoming season.
With the official first tag of the year in place, it is time to see how much you know about this important phase of the offseason: