ENGLEWOOD, Colo. -- The Denver Broncos' defense is a leaky faucet.
It's a maddening drip, drip, drip that just keeps happening no matter how much tinkering, tightening and talking you do to fix it.
But one consistent problem over the past two seasons is stopping the opposing tight end.
"The tight ends, we haven't fixed that yet," is how Broncos coach Vance Joseph has put it already this season.
Consider it a work in progress. Over the past 18 games it's gone from A (Andrews) to almost Z (Witten) as tight end after tight end, regardless of age, experience or résumé, has romped through the Denver defense.