The FA Cup is always famed for its storylines.
Whether it is 30 years on from when Division Four Wrexham beat English champions Arsenal, when 200-1 Oldham Athletic beat Fulham or Wigan knocking off Manchester City in the final.
Ahead of the weekend's third round ties, Sportsmail assesses each of them and looks at the likelihood of a shock...
Millwall v Crystal Palace
This south London derby could be the fiercest tie of the round, with a rare sellout crowd expected at the Den.