Having played the 3rd placed team in the league in mid week Sutton had to travel to 4th placed Sheffield a ground were they had never won.
But Sutton hit the ground running and within 16 minutes they had stunned Sheffield with a three goal blast.
The first came as early as the second minute when Kristian Ramsay Dickson moved from right back to act as a stand in centre forward due to an injury to Matt Gaedner was fed a ball on the edge of the box and he fired confidently into the net giving the keeper no chance.
His second in the 14th minute was the best goal of the game when he latched on to a ball down the middle and calmly lobbed the advancing keeper with the skill of an experienced forward.
Two minutes later it was three when a ball crossed from the right by Daryl Taylor was picked up by Luke Chapman
with his back to the goal and he turned his marker and fired low into the corner of the net.
Sutton were well in command and it was against the run of play that Sheffield pulled one back. It came from a corner to the far post which was met by a flying header from Jamie Hadfield but there was suspicion of a foul has he was well over the top of Joel Kettle preventing him from having any contact with the ball.
The second half was a quieter affair with chances at both ends with the best chance falling to Sutton when a corner was met by Joel Kettle and his header was cleared of the line by a defender's header.
Sheffield got a consolation second goal almost on the stroke of full time when Jimmy Quiggin mistimed his tackle and from the penalty spot Steve Wolley made no mistake.
This was a good win for Sutton.