As the Premier League still suffers from the fall-out of events at Loftus Road between Chelsea and QPR on 23 October 2011, Andre Villas-Boas has described it as a turning point in his ultimately failed Stamford Bridge career.
The Portuguese, who is set to face his old club for the first time with Tottenham Hotspur this weekend, had got Chelsea into quite a strong position before the trip to Loftus Road last year. His team had won six of their first eight games, with the only defeat coming in a narrow 3-2 defeat at Manchester United.
After Chelsea suffered two red cards, the incident between John Terry and Anton Ferdinand and then, ultimately, a 1-0 defeat, Villas-Boas's side went on to also lose their next league game at Arsenal. They never recovered the same momentum and the Portuguese manager was eventually sacked.
"When I go back now to this exact date last season before we played the QPR game at Chelsea in our position, then our position at the end of the league and the events that happened after [Loftus Road]... we had a consecutive run of bad results.
"In the end, football results are about stability and jumping from adversity. At my time at Chelsea, we never got that stability. We were always up and down and when Chelsea were with Robbie [Di Matteo], he worked on the players motivation and they went on a run.
"We went to Everton away [in the League Cup immediately after Loftus Road] and it was a massive win, then we dropped points against Arsenal. It was those two Premier League fixtures in a row that took the belief from us being champions."