Palace are in a relatively decent position in the Premier League as it stands and so they've gone pretty strong with a view to a good Cup run. Wilfried Zaha, Michael Olise, Jordan Ayew and plenty of other first-team regulars start. There's a chance for Will Hughes to impress in midfield.
Southampton have gone pretty strong too, with a few opportunities handed out here and there. Nathan Jones' lads really do need a win, regardless of the competition.
Today, we have 21 ties to cover, spread across the day.
Unusually, in this year's third round we have five all-Premier League ties, which somewhat reduces the capacity for shocks.