Jets' Sam Darnold: Out for Week 2 with mono

Darnold has been diagnosed with mononucleosis and will not play in Monday's game against the Browns, Brian Costello of the New York Post reports.

Analysis:

Darnold missed Wednesday's practice with what was originally believed to be strep throat, but further testing has revealed that the second-year quarterback is suffering from mono. The timetable for a return is fairly unpredictable, as not only is Darnold likely suffering from extreme exhaustion, but head coach Adam Gase has said that he has already lost a considerable amount of weight. Consider Darnold week-to-week for now, but in his absence, Trevor Siemian will take over as the team's starter under center.