Because I've got nothing better to do today, I'll go through every goal that we've conceded which Spence has been partly at fault for.
Against Swansea, he lazily closes down his man, and then watches as the ball is passed to Dhanda, who runs off and scores.
Against Preston, for the second goal he fails to block a slow ball rolling past him, it's picked up by a Preston player who passes it to Scott Sinclair who runs on and scores, he could also have closed down Sinclair after his intial mistake. This is a game he was actually playing as a right back too, so it's less excusable.
Against Blackburn, he wanders off and leaves his original man to start marking Rothwell, disrupting our other players marking and then completely leaves him anyway to allow him to run in for a tap in.
Against Rotherham, very loosely marks Crooks to allow him a free shot from the edge of the box.
Against Swansea he deflects their opener past Bettinelli, though I don't blame him for this one whatsoever, Howson and Bola were at fault for this one.
Against Millwall, demands the ball off Akpom and immediately loses it as he paid no attention to the player behind him, they break away, the ball is in the back of our net 5 seconds later.
There's 5 goals he's been at fault for this season, plus one where he's unfortunate. These are just the ones that actually led to goals too, he's made plenty of mistakes that haven't.
Now, for most of these goals you can excuse it as he's playing as an attacking player, but then there's absolutely no contribution up the other end of the pitch to balance it out.
He's only started 21 games this season and he's spent a lot of the second half of the season on the bench, so I think 5 goals is fairly significant.
He ia far from the only player to make mistakes leading to goals, before someone again comes in with "what about when McNair or Howson did this", and I'm not trying to pretend he is and there are other players who share culpability for some of these goals.
If he's going to be an attacking player, he should be scoring and assisting. I think there's only Dijksteel of the regular starters who's been involved in fewer goals.