Kieffer Moore celebrates after scoring the fourth goal of the game in the clash with the Blades.
Kieffer Moore scored twice as Wrexham produced a stunning comeback from 3-1 down to overcome his former club Sheffield United in a pulsating eight-goal Championship contest.
Patrick Bamford's excellent first-time shot put United ahead, but Wrexham levelled just two minutes later courtesy of a Tyler Bindon own goal.
Bamford's second and a Callum O'Hare nod appeared to have handed United in a comfortable lead at 3-1, before Moore pulled one back with a powerful header of his own.
The winger's header early in the second half made it all square, paving the way for the goalscorer to put Wrexham ahead for the first time with 14 minutes remaining.
Josh Windass' composed spot-kick late on wrapped up the points, ending a sequence of five matches without victory for the promoted side.
In their previous meeting in the cup competition nearly three years ago, it finished in a thrilling six-goal stalemate.
Friday's encounter provided another epic, breathless installment in their growing rivalry.
Backed by high-profile investors, the club's remarkable ascent through the leagues has led them back to the Championship for the first time in 43 years.
Ahead of this fixture on the following a poor patch of form, the boss had demanded a return of the characteristic fighting qualities from those past encounters.
His team undoubtedly delivered, battling back from a two-goal hole to secure a memorable comeback win that highlights their never-say-die character.
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