Fantasy football managers definitely missed the Dallas Cowboys D/ST in Week 9, when the team was on bye. It's not every day we're here talking about missing a defense during a heavy bye week, but the Cowboys stop unit hasn't been just a regular defense through the first half of the season.
Dallas currently ranks second among D/STs with 92 fantasy points (10 under the points leaders, the New England Patriots). They lead the league in sacks (33 — yes, even with the bye week) and have yet to allow more than 20 points more than twice this season.