United women were held at home by a spirited Lewes team who managed to deny the Blades from scoring for the first time this season.
While it ensured a third clean sheet in a row for Neil Redfearn's side, chances came and went on what become a frustrating afternoon at the Technique Stadium.
Up against a tough Lewes defence, United had to resort to long distance efforts as they looked for a breakthrough, Rhema Lord-Mears seeing an effort go over and another saved, before Jade Pennock saw a shot deflected wide.
After the break, the Blades stepped it up a gear but could never find the crucial breakthrough. Pennock saw a stinging volley well pushed over in what was one of United's better chances, before substitute Courtney Sweetman-Kirk saw a header go wide and a shot from the edge of the box blocked.
Mel Johnson was also thwarted as she too saw an effort well blocked from inside the box, before Pennock saw another effort go into the side-netting and Maddy Cusack fired a shot from distance which dropped just over the bar.
It was one of those days for Blades as Veatriki Sarri saw a low effort go agonisingly past the post and Katie Wilkinson saw a good attempt pushed away, and despite a lot of late pressure and balls into the box, the Lewes defence stood firm to frustrate the Blades and earn themselves a point.
Redfearn: "We played well enough and we created enough chances to win two or three games. We have to give Lewes some credit because they defended well, they do what they do. It's about as well as we've moved the ball about and having a good shape to us, but we couldn't get anyone a good enough sight of goal. We had a few flash wide and a few blocked, but sometimes this happens. Lewes's results and performances have shown this, they've been very good defensively, they're good at it.
From our point of view, we've got to find a way to break them down and we didn't. We're disappointed because we want to win but I'm not disappointed with the way the team applied themselves. There's a long way to go, teams are going to take points off each other this season, we're still unbeaten and we have a game in hand on some, so we're in a good position."
Blades: Kitching, Little, Hartley, Lipka, Pennock, Cusack, Wilkinson, Dixon, Lord-Mears (Sweetman-Kirk 61), Sarri, M. Johnson.
Unused: Flaherty, Paul, Matthews, Coan, Watson, Walton, A. Johnson, Chance.