Numbers crunched ahead of Shrimpers visit...Millwall host Southend United at The Den on Saturday afternoon (kick-off 3pm) in a promotion six-pointer.
The Shrimpers sit in 6th place in the Sky Bet League One table, but a clutch of clubs - The Lions included - are within one victory of overtaking them and joining the Play-Off pack with under three months to go in the season.
With fellow promotion rivals Fleetwood Town and Rochdale squaring up at Highbury Stadium this weekend, the shape of the top six could look entirely different by the time the final whistles are blown up and down the country.
Saturday's meeting will be the 86th between Millwall and Southend United. Historically, The Lions hold the upper hand with regards to victories, having won 36 games to The Shrimpers' 27.
The two clubs are no strangers, having met three times last season and twice already this campaign.
In November 2016, Mahlon Romeo's first goal at The Den secured The Lions' passage into Round Two of The Emirates FA Cup in a 1-0 victory, whilst an under-par Millwall went down 3-1 at Roots Hall in the corresponding League fixture back in September.
Neil Harris' side had more joy on the seaside last season, as they claimed two victories within a month, keeping clean sheets in both, winning 4-0 in the League and 2-0 in a Johnstone's Paint Trophy Area Semi-Final.
Danny Schofield and Shaun Batt eased Millwall to a 2-0 win at The Den as The Lions chased automatic promotion to The Championship in January 2010, whilst the previous season, Ahmet Brkovic's 90th minute equaliser rescued a point after Alex Revell's 7th minute opener looked to have given Southend all three points.
The Shrimpers will always have their place in the Den history books as, in August 1993, they played the part of Millwall's first League opponents at The New Den. Unfortunately for The Lions, despite John Kerr's history-making goal, they went down 4-1, with Jason Lee, Ricky Otto, Andy Ansah and Tommy Mooney on the score-sheet.
A name familiar to both sets of supporters is Dean Neal - the striker paired up with Kevin Bremner to hit The Shrimpers for four in 1984, whilst for the more vintage fan, an 8-1 win in 1925 fell just short of the club's record win of 9-1.
Play your part as Millwall look to go an 11th game unbeaten and move into Sky Bet League One's top six - purchase your ticket here.
Tweets by @MillwallFC