Bournemouth 4-0 Chelsea - who can honestly say they saw that coming?
Joshua King (2), David Brooks and Charlie Daniels were scorers as Eddie Howe's side ran riot at Dean Court against a club chasing Champions League football.
And it has to be said that Chelsea - who started with star man Eden Hazard and recent signing Gonzalo Higuain - were absolutely awful.
Manager Maurizio Sarri looked furious on the sidelines and he spoke honestly about the performance from his players in his post-match press conference.
"It is very hard to have an idea about the performance because I think we played very well in the first half," said the Italian.
"Then, we conceded the goal after two minutes and stopped [playing]. Then, we stopped [defending] and then we are in trouble.
"I think we could have sorted the problem [after the goal], there were 43 minutes to play, but not with that kind of reaction. It is hard to understand why.
"I tried to understand and I spoke with the players immediately after. Maybe I am not able to motivate the players.
"I didn't see during the match any sign of my work, so I am frustrated. At the moment they are able to react always against a big team.
"When we play against a big team, we play with a big level of motivation. I think in this match the problem was different. In the first half we had good motivation.
"We had too many players with their back to the opponents goal. We need more movements without the ball. Otherwise for the striker in this team, it is a very big problem to play."
Sarri touched upon his chat with Chelsea's players in the dressing room after the game and according to BBC commentator Chris Wise, they were in there for over 40 minutes.
In fact, Sarri told his whole backroom staff to leave the dressing room so that he could speak to the players on his own. One hour later, he emerged to speak to the press.
Would love to have been a fly on the wall for that conversation.
Sarri was inevitably asked about his hour-long talk with Chelsea players and said it was because he "needed to understand" why the game went so wrong.
"At that moment I wanted to talk with them alone, because as I said, I needed to understand," the Blues boss added.
"It is impossible to play in such a different way in the first half than the second half. I don't understand and I want to try again tomorrow."