Liverpool manager Jurgen Klopp then made seven changes at the break with Xherdan Shaqiri, Andy Robertson, Marko Grujic, Curtis Jones, Adam Lallana, Daniel Sturridge and Danny Ings all making an appearance with Shaqiri providing the assist on the final goal.
Karius' demise came as the result of his disastrous night in the Champions League final, but it can certainly be argued each of those goalkeepers declined following their arrival regardless.
Klopp is acutely aware of this, it turns out, and has responded brilliantly in an interview with the Liverpool Echo's James Pearce. For Raggy (Klavan) and Joel (Matip), probably they are not fit and can not play for the weekend, but we don't need 12 centre-halves, we only need two at least and one to change would be extremely cool.
Klopp has not ruled out captain Jordan Henderson featuring on Sunday despite only returning to training at the weekend.
Some last-ditch defending prevented Liverpool from regaining their two-goal cushion on the stroke of half time, with Sirigu thwarting Wijnaldum after the midfielder had made another run beyond the Liverpool attack, and Alex Berenguer cleared Alexander-Arnold's follow-up off the line.
It adds up to an exciting team and by getting their major transfer business done early, Klopp has had time to integrate his new signings into the squad over the course of the pre-season tour of America.
Liverpool's weakness in the goalkeeper position has been addressed with the purchase of Brazilian Alisson from AS Roma and with Virgil van Dijk having settled in following his move in January, Klopp's side look a much more complete package.
Liverpool have struggled badly in the goalkeeper department in recent years but the situation appears to have finally been resolved this summer.