But three centre-backs over two seems to really be working for Alfreton Town at the moment.
The Reds manager Billy Heath made the decision to abandon his flat back four last month and it has worked a treat.
The club, struggling against the drop in the National League North in February, have put three big wins together.
They have beaten title-chasing Chorley, fellow strugglers Guiseley and last weekend they got the better of Ashton United 2-0.
That result pulled Alfreton 13 points away from trouble - but Heath won’t accept his side are safe just yet.
But he does know his players are in great form and said on the club’s video service: “The change in formation has really helped us.
“We are now going with three central defenders and that’s allowing us to keep clean sheets.
“If you start winning games and doing it on a regular basis the confidence starts to come.
“You then get the belief that even when you aren’t playing well - like we didn’t in the first half against Ashton - that something will happen for you.
“We’re playing well and need to keep going.”