Kieffer Moore celebrates after scoring the fourth goal of the game in the clash with the Blades.
Kieffer Moore scored twice as Wrexham mounted a remarkable comeback from 3-1 down to overcome his former club Chris Wilder's men in a breathtaking eight-goal second-tier contest.
The forward's excellent volley opened the scoring, but Wrexham equalised just two minutes later thanks to a deflected own goal.
A quickfire double from Bamford and a close-range nod appeared to have put the visitors in command at 3-1, until Moore reduced the arrears with a thumping goal of his own.
Ryan Longman's glancing effort early in the second period made it all square, before the goalscorer to give his side the lead for the first time with 14 minutes left to play.
Josh Windass' confident spot-kick in the closing stages wrapped up the points, halting a sequence of five matches without victory for the Welsh club.
In their previous meeting in the cup competition back in 2023, it finished in a thrilling six-goal stalemate.
This latest clash delivered another high-octane, dramatic chapter in their growing rivalry.
Backed by high-profile investors, Wrexham's meteoric rise through the divisions has brought them back to the second tier for the first time in 43 years.
Ahead of this Boxing Day match on the following a poor patch of form, the boss had called for a return of the famous spirit from those past encounters.
The players certainly delivered, overcoming a two-goal hole to secure a famous comeback win that underscores their never-say-die attitude.