It' can be really deceptive whether the ball has gone out or not depending on the camera angle, but that looked out. Credit Kane for not giving up though.
Linesman can't see it really. He's got see through goalposts and netting. Unlucky for Charlton but they've probably got a penalty to look forward to.
That one in the world cup looked miles out as well but the edge of the ball was on the line. Pointless using stills now.