But who caught the eye for the Blades? Our man at the game gives his player ratings from the game.
9. Ollie Norwood 7
Twice set Baldock clear down the right with superb pinged crossfield passes and set up United's 'goal' with a stunning free-kick across the box, only for VAR to rule it out. Looked dejected at the end as he trudged from the field Photo: Simon Bellis
10. Oli McBurnie 7
Great awareness to set McGoldrick free for early chance and looked to have broken the deadlock himself, before VAR ruled his close-range finish out for offside. Ran his blood to water for the cause before making way, for Sharp Photo: Simon Bellis
11. David McGoldrick 5
May feel he could have done better with one-on-one chance against Gunn and missed two other good chances to score for the Blades. His play otherwise was good, dropping deep and looking to get United moving quickly Photo: Simon Bellis
12. SUBS: Billy Sharp 5
Looked very lively when he came on and gave Vestergaard the slip a couple of times before crossing dangerously. But saw red for a frustrated challenge on Armstrong, just when his side looked like they may fashion an equaliser Photo: Mark Kerton