With Cardiff facing a two legged League Cup semi final in the next couple of weeks and a promotion challenge, they can be forgiven for making changes this weekend and giving starts to players like Rob Earnshaw who have struggled to get a look in in recent months.
With Premier League survival a key issue for West Brom they are also likely to change things around but as the top flight team the pressure will be on them to get a result especially as they have not scored in their last three games. A good point in a goalless draw with Man City has been followed by defeats against Everton and Tottenham.
What both teams will be looking to avoid will be a replay and another match to an already busy January (especially for Cardiff).
Kick off on Saturday is at 3:00pm. Tickets are still on sale for the match at The Hawthorns.
There are still non league teams in the competition including Wrexham who face a trip to Brighton. Games are being played between Friday and Monday.
Full FA Cup 3rd round fixtures:
| Friday 06th January 2012 | |||
| The FA Cup Third Round | |||
| Liverpool | v | Oldham Athletic | 20:00 |
| Saturday 07th January 2012 | |||
| The FA Cup Third Round | |||
| Birmingham City | v | Wolverhampton Wanderers | 12:30 |
| Dagenham & Redbridge | v | Millwall | 13:00 |
| Barnsley | v | Swansea City | 15:00 |
| Brighton and Hove Albion | v | Wrexham | 15:00 |
| Coventry City | v | Southampton | 15:00 |
| Crawley Town | v | Bristol City | 15:00 |
| Derby County | v | Crystal Palace | 15:00 |
| Doncaster Rovers | v | Notts County | 15:00 |
| Everton | v | Tamworth | 15:00 |
| Fleetwood Town | v | Blackpool | 15:00 |
| Fulham | v | Charlton Athletic | 15:00 |
| Gillingham | v | Stoke City | 15:00 |
| Hull City | v | Ipswich Town | 15:00 |
| Macclesfield Town | v | Bolton Wanderers | 15:00 |
| Middlesbrough | v | Shrewsbury Town | 15:00 |
| Milton Keynes Dons | v | Queens Park Rangers | 15:00 |
| Newcastle United | v | Blackburn Rovers | 15:00 |
| Norwich City | v | Burnley | 15:00 |
| Nottingham Forest | v | Leicester City | 15:00 |
| Reading | v | Stevenage Borough | 15:00 |
| Sheffield United | v | Salisbury City | 15:00 |
| Swindon Town | v | Wigan Athletic | 15:00 |
| Tottenham Hotspur | v | Cheltenham Town | 15:00 |
| Watford | v | Bradford City | 15:00 |
| West Bromwich Albion | v | Cardiff City | 15:00 |
| Bristol Rovers | v | Aston Villa | 17:30 |
| Sunday 08th January 2012 | |||
| The FA Cup Third Round | |||
| Manchester City | v | Manchester United | 13:00 |
| Chelsea | v | Portsmouth | 15:00 |
| Sheffield Wednesday | v | West Ham United | 15:00 |
| Peterborough United | v | Sunderland | 15:30 |
| Monday 09th January 2012 | |||
| The FA Cup Third Round | |||
| Arsenal | v | Leeds United | 19:45 |