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A repeat will take some doing but all is not lost - and if they can score the first goal at London Stadium next week, belief will soon return to a Hammers side that is increasingly savvy in European competition.

But that can take some doing, because by their very nature, they operate by committee.

It will take some doing to overhaul the Oppenheimer steamroller, but stranger things have happened.

While going even remotely close to matching the all-time notorious Hagler-Hearns bout would take some doing, Jonas and Mayer certainly served up their own memorable evening of boxing.

But to transform that sentiment from wishful thinking and locker room bravado into reality was going to take some doing.