Liverpool felt the full force of Jose Mourinho's tactical expertise as they fell to a hugely damaging 2-0 defeat to Chelsea at Anfield, which has seriously harmed their Premier League title chances.
The Reds struggled to create chances against the blanket Blues defence set up by Mourinho, whose side took the lead when a slip from Steven Gerrard allowed Demba Ba to score in first-half stoppage time.
Try as they might, there was no way back for Liverpool after that. Defensive organisation saw Chelsea over the line, with Willian adding a last-gasp second when he was set up by Fernando Torres.
Here are six lessons learned from what could be a pivotal afternoon at Anfield.