The visitors, who were forced in to making three changes due to injuries, were 2-0 down inside eight minutes and crumbled at the Tottenham Hotspur Stadium.
Sean Dyche's side have now conceded 11 goals in their last three fixtures. Here's how Dan Black scored the performances.
1. Nick Pope 5
Made a smart save with his leg to deny Son in the first half, but was beaten in the air by Alli as Moura netted seconds later. Couldn't get close to Kane's pile-driver and was left exposed for the home side's third.
2. Matt Lowton 4
Gave the ball away cheaply in the build up to Spurs' opener and was caught out of possession as the hosts doubled their lead. Couldn't get anywhere near Son all afternoon.
3. Erik Pieters 4
Weak in the challenge as Son travelled the length of the pitch to make it 3-0. Struggled in terms of positional awareness as Spurs stretched the play and Aurier picked up space in behind far too easily.
4. James Tarkowski 5
Made a superb intervention to deny Alli when the England international raced through on goal, but didn't get tight enough to Kane when the striker thumped the ball in to the roof of the net for Spurs' fourth.