The question was difficult to answer.
Bournemouth manager Eddie Howe had already hailed the win against Chelsea last week as the biggest in the club's history.
And then this: a 2-1 win at home against 20-time English champion Manchester United. Within a space of a week, his Bournemouth, which cost a league-low £26.3 million to assemble, outwitted Chelsea and United squads that cost hundreds of millions of pounds.
"For us, it's just been a brilliant week," Howe told Sky Sports afterwards, when asked where the latest win ranks.
He credited the change to a three-man midfield, as well as the recent exploits of Junior Stanislas and Josh King, as reasons for the turnaround. Going into the end of November, Bournemouth had lost five of six Premier League matches, and looked set to go straight back down after a maiden voyage to the top flight.
Both Stanislas and King scored against United in this game - Stanislas off a corner kick, King off another brilliantly executed set piece - to put the Cherries provisionally ahead of Chelsea in 14th place.
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"If you looked at the spell of games we had starting at Swansea and Everton, and then Chelsea and Manchester United, I don't think anyone would have given us much hope of getting any points with the run (of poor form) we were on," said Howe. "To get the return we have has been hugely uplifting for everybody."
But this is not the victory of a few men. It's a whole team effort being rewarded. Bournemouth lost several protagonists to long-term injuries, including leading scorer Callum Wilson, who is still tied as the club's top striker with five Premier League goals despite a knee injury that's kept him out since September.
"The real feature today was the whole work ethic of the team," said Howe. "Whenever you play Manchester United or Chelsea, you know you're going to have a lot of time without the ball. But I think we've been very good in the two games."
Preparing for the match was even more difficult considering the tragedy midfielder Harry Arter and his family suffered during the week. Arter lost his newborn child at birth, but made himself available for this fixture, and in the end produced a fantastic performance.
"He showed real strength to keep his emotions in check, and I've got to say his teammates rallied around him really well," said Howe. "There were some emotional scenes in the dressing room afterwards."
