Under-fire Sheffield United boss Bryan Robson was left delighted and frustrated in equal measure following his side´s shock 2-1 FA Cup win over Manchester City.

The 2-0 derby defeat to Sheffield Wednesday nine days ago had left many fans calling for Robson to go, yet his players produced a performance against City to make him proud and leave him bewildered by his side´s inconsistency.

"What a difference eight days makes, and that´s the frustrating part because that was a good performance from the players, and we know we can perform like that," said Robson.

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