Check our numbers guide to Tuesday night's Den derby
Compared to The Lions' illustrious history stretching back to 1885, AFC Wimbledon are a team barely out of nappies. But many would agree that the teething infant, delivered into the world in 2002, is punching well above its weight. The south Londoners are sitting in sixth place in the League One table with a three point advantage over Millwall, albeit with an extra game under their belt.
Their manager, Neal Ardley, spent a season with Millwall back in 2006/7 which may well add an extra frisson of competition between the two teams.
In previous encounters Millwall have a clear advantage over Tuesday night's opponents, winning on both occasions.
Their first encounter back in November 2009 saw Millwall cruise to a comfortable 4-1 FA Cup success at The Den.
The second and most recent meeting, also played in SE16, came four seasons later in the Capital One Cup and once again saw The Lions emerging victorious with a 2-1 win.
On that occasion it was two second-half goals from Andy Keogh and Martyn Woolford that secured the game for Millwall.
Keogh netted in the 51st minute from an almost impossible angle, and Woolford completed the formalities with a close-range effort 12 minutes from time.
The visitors threatened a comeback when midfielder Sammy Moore's low, hard shot slipped past the outstretched hand of keeper Stephen Bywater, standing in for an injured David Forde. And with a last-minute equaliser looking almost certain it was Bywater, who saved Millwall blushes with a brilliant fingertip save from a goal-bound effort delivered by Dons' striker Jack Midson.
That proved to be the last attempt of the game as The Lions held on to book their place in the Second Round.
A key member of the Millwall defence that day was a certain Paul Robinson, who will be revisiting his old alma mater on Tuesday night, albeit in AFC Wimbledon colours. Robbo will no doubt be hoping to reclaim the bragging rights from his old friend and team-mate Neil Harris.
have The Lions evens to win, with Wimbledon 13/5 and the draw priced 13/5. The only current Millwall player to have featured in the previous match, Jimmy Abdou, is 13/2 to get on the scoresheet. Shane Ferguson, who like Jimmy returned to The Lions' bench at the weekend after a spell on international duty, is priced at 12/1 to score first or last with Sky Bet
whilst Harry Smith is 7/4 to score in 90 minutes and 5/1 any time.
Tickets for Tuesday night's game are on sale up until the 7.45pm kick-off at The Den, but if you can't get to the match you can listen to live commentary on Lions PlayerHD and also follow updates on Twitter @MillwallFCTweets by @MillwallFC