Your D/ST wasn't even on the field and yet they just lost points? How is that possible?
ESPN uses the NFL's scoring model for D/ST fantasy scoring so we're sorry but yes, it's common fantasy procedure that any points scored against your D/ST team (whether or not the defense actually gave up the points) will negatively affect their fantasy score. For instance, let's say you own the Colts D/ST and Andrew Luck gets intercepted to the house by the Seahawks D. Those six points will indeed negatively affect the Colts' D/ST score.
WHY DO D/STs SHOW POINTS AT THE START OF THE GAME?
Your D/ST begins each game with 10 points because at the time they've given up 0 points (worth 5 points) and they've allowed 0 offense yards to their opponent (you guessed it, also worth 5 points). As the game progresses and your D/ST squad starts racking up sacks and turnovers they'll gain points along the way, but of course if they give up yards to the opponent's offense and points in any way their fantasy score will drop.
POINT AFTER TOUCHDOWN D/ST SCORING
In the 2015 Football Season, the NFL changed the rules for Point After Touchdown (PAT) attempts. To reflect these changes, the following D/ST scoring changes were added:
- D/ST earns a Safety during a PAT, that D/ST will receive 1 point.
- D/ST returns the ball to their own end zone during a PAT, that D/ST will receive 2 points.
These scoring changes apply to all ESPN Fantasy Football League types and both D/ST and IDP scoring models. As always, league managers can modify, enable, disable as desired in LM leagues.