The tight end position seemed to offer several distinct classes of high-end talent entering this season. The Patriots' Rob Gronkowski, Redskins' Jordan Reed and Bengals' Tyler Eifert fit on one side of the debate as terrific players we can't really count on for a full season of games or, perhaps even close to it. Then there was the Panthers' Greg Olsen, Chiefs' Travis Kelce and Titans' Delanie Walker, also standout performers but more likely to stay healthy and offer fantasy owners the luxury of not needing a backup. Then on Sunday one of them got hurt.