Ironically the Blades beat Crewe Alexandra by a single Stefan Scougall goal last Saturday - though it could have been more. Now they will travel their again in 11 days time in the hope of booking a place in round 2.
United have only once before met Crewe in the FA Cup; losing by three goals to one in January 1948.
First Round Draw...
Mansfield Town v Concord Rangers
Gosport Borough v Colchester United
Yeovil Town v Crawley Town
York City v AFC Wimbledon
Walsall v Shrewsbury Town
Notts County v Accrington Stanley
Chorley or FC Halifax Town v Bradford City
Warrington Town v Exeter City
Eastleigh v Alfreton Town or Lincoln City
Basingstoke or Harrow Borough v Spennymoor Town or AFC Telford
Dagenham & Redbridge v Tamworth or Southport
Weston-super-Mare v Doncaster Rovers
Peterborough v Carlisle United
Cheltenham Town v Swindon Town
Bromley v Dartford
Weymouth or Braintree Town v Chesterfield
Chelmsford City or Barnet v Wycombe Wanderers
Gillingham v Bristol City
Portsmouth v Aldershot
Norton United or Shildon v Gateshead
Crewe Alexandra v Sheffield United
Grimsby Town v Oxford United
Tranmere Rovers v Bristol Rovers
Southend United v Chester FC
Luton Town v Newport County
Stevenage v Maidstone United
Bury v Nuneaton or Hemel Hempstead
Cambridge United v Fleetwood Town
Northampton Town v Rochdale
Eastbourne Borough or Dover Athletic v Morecambe
Port Vale v MK Dons
Macclesfield Town or Wrexham v Woking
Plymouth Argyle v AFC Fylde
Barnsley v Burton Albion
Hartlepool United v East Thurrock United
Coventry City v Worcester City
Oldham Athletic v Leyton Orient
Canvey Island or Havant & Waterlooville v Preston North End
Blyth Spartans v Altrincham