- Swansea won 2-0 the last time they faced Arsenal, in the league at the Emirates last month
- Swansea have lost just twice in their last 17 games
- Swansea are already in the semi-final of the Capital One Cup, and hold a 2-0 advantage over Chelsea after the first leg
- Last season, Swansea were knocked out in the FA Cup fourth round by Bolton
- Michu has scored three times in his last two games against Arsenal
- Arsenal have won the FA Cup 10 times - their last trophy was the FA Cup in 2005
- The last time Arsenal failed to make it through to the fourth round of the FA Cup was 1996
- The winners will play away at Brighton in the fourth round
Highlights of the game will be on ITV Cymru Wales at 10.50pm tonight.
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Aaron Ramsey has told his English team-mates at Arsenal to beware Wales overtaking them in the FIFA rankings.
Plenty of fine dry weather to come today and prolonged spells of sunshine. A cool easterly breeze will take the edge off the temperatures.
The three-day event in the Welsh capital is expected to attract more than 20,000 visitors.