There are only six games in the Fourth round as 10 FA WSL 1 team will enter in Round 5. There are many local derbies as well as potential cupsets.
FA WSL 2 between each other
Durham v Everton
Sheffield FC v Doncaster Rovers Belles
FA WSL 2 V FA WPL Southern
Coventry United v Aston Villa*
Tottenham Hotspur v Brighton & Hove Albion*
FA WSL 2 V FA WPL Northern
Millwall Lionesses* v Nottingham Forest
FA WPL Northern between each other
West Bromwich Albion v Leicester City
We are therefore guaranteed ten FA WSL1, two FA WSL 2 and one FA WPL team in Round 5. Millwall, Brighton and Aston Villa certainly will have to be on their toes against quality opponents from the FA WPL.
We could end up with only 3 FA WSL 2 sides in Round 5.