West Bromwich Albion will have to succeed where Chelsea amazingly failed if they are to keep alive Steve Clarke's dreams of another memorable FA Cup run.
Four days after the Champions League and FA Cup holders were stunned by Queens Park Rangers' league victory at Stamford Bridge, Albion shape up as the next opponents for Harry Redknapp's revitalised side.
The Hawthorns head coach believes their task at Loftus Road will be tougher than when they won there in the Premier League on Boxing Day.
"They will feel they have turned a corner," he said. "I don't know whether Harry will keep something like the same team and try to keep the momentum of that fantastic result.
"They will look on it as a season-changing result but we don't feel like we have lost too much momentum despite the last two games.
"We came into Christmas with two wins and put on a good show at Manchester United, then gave it a right good go in the second half against Fulham. There's not too much negativity about the place."
Clarke, meanwhile, has insisted that he won't be losing anyone he doesn't want to part with in the transfer window.
Although he has made it clear fellow Scot Graham Dorrans will be allowed to leave if a suitable offer is forthcoming, he is unconcerned by stories linking the more prized Peter Odemwingie and Jonas Olsson with other clubs.
"It's the silly season," Clarke said. "People make up stories in January. It's just speculation with those two. The players we need to be here will still be here on February 1."
Clarke refused to comment on a story that Olsson has a £3m escape clause in the new long-term contract he signed early in the season and sees a role in the coming weeks for Craig Dawson and George Thorne.
"Craig would benefit from going out on loan and we have discussed it," he said. "But I have three defenders out (Olsson, Steven Reid and Goran Popov), so there's no way he can leave at the moment.
"And I won't be seeking a replacement for Graham Dorrans. I have one with George Thorne. He did very well at Peterborough and doing well there on loan was just what the boy needed.We're grateful to Peterborough for giving him the chance."
The Hawthorns, meanwhile, has been saddened by the death of former Albion legend Derek Kevan at the age of 77.
The forward, affectionately known as The Tank, scored 173 goals to stand fifth in the club's all-time marksmen list and also won 14 England caps, including the 1958 World Cup finals, while playing for them.