Thomas Tuchel's decision to introduce Kepa Arrizabalaga prior to Chelsea and Liverpool's Carabao Cup penalty shootout certainly divided opinion.
It proved to be a substitution that backfired for the Londoners as Kepa failed to save any of the Reds' 11 spot-kicks and then blazed the decisive penalty over the bar.
Tuchel previously enjoyed success with this tactic in the UEFA Super Cup final back in August, having defeated Villarreal 6-5 on penalties after bringing on the Spanish shot-stopper in the 120th minute of the match.
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This was a subject that former Liverpool duo Jamie Carragher and Jamie Redknapp debated after the match, with the latter convinced it was a 'rubbish idea' to withdraw Mendy.
"I don't like it, I think it is rubbish," said Redknapp of the substitution.
"Mendy is likely to save them, he is one of the best keepers in the world. I hope it puts it to bed now.
"I don't think it works and it is a rubbish idea. I didn't like his [Kepa] behaviour all the way through it. I think it is a case of being too clever for your own good. You're complicating it.
"He [Mendy] is a bigger keeper and there is no reason why they couldn't have won it if they had Mendy in goal."
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Providing an alternative view on the argument, Carragher pointed to the past effectiveness of this move enjoyed by Tuchel's side.
"We shouldn't forget that was the decision he made in the Super Cup final," he told Sky Sports.
"Kepa came on and they won that game. I think Chelsea have won two shootouts on their way to this final - and this is Kepa's competition. There is a method behind it and you also have the psychological side of things, where you bring a keeper on from the bench and how it affects the opposition.
"That wasn't the case and the penalties were fantastic from all players."
But Redknapp, who remained unconvinced with this rationale, fired back at his fellow Sky pundit: "He [Kepa] didn't get near a penalty, not even close.
"Anyone can miss a penalty, but it just doesn't make sense to me. He is not a good enough keeper to put all your eggs in that basket."
"I never said that," replied Carragher.
"There's no way a manager make a decision that would give him less chance of winning. They have had success doing that. Who knows what would have happened.
"What I'm saying is, Tuchel has taken that decision before and they won the Super Cup."
