Probably because it wasn't going in until Bartley deflected the ball. He would have needed the reflexes of Superman to get near that.
But isn't that why keepers dive anyway, even if they think it's going wide? If there's somem spin, or a deflection, etc, then they're on their way.
Just to be clear, i do not blame SJ for the goal tonight. I thought he had one of his better games. We still had to head too many clear from practically under his cross bar, and he needs to work on pushing the ball out of the danger zone and not into it.
It's an observation that I've never seen a keeper concede so many and be nowhere near the ball.