NewsAtDen looks at all 23 of Millwall's Championship opponents ahead of the new season.
Next up, Lucas Ball casts an eye over rivals Leeds United
Nickname: The Whites
Manager: Thomas Christiansen
Stadium: Elland Road (37,890)
Club website: www.leedsunited.com
Nearest train station: Leeds or Cottingley
Postcode: LS11 0ES
Title odds (Sky Bet): 16/1
Last meeting: Championship – Leeds 1-0 Millwall February 14, 2015
Position: 7th in Sky Bet Championship
Goals for: 61
Goals against: 47
Top league scorer: Chris Wood (27)
Ins: Pontus Jansson (£3.23mil); Samu Saiz (£2.98mil); Hadi Sacko (£1.7mil); Mateusz Klich (£1.45mil) Caleb Ekuban (£476k); Felix Wiedwald (£425k); Vurnon Anita (free); Ezgjan Allioski (undisclosed); Matthew Pennington (loan)
Outs: Lewie Coyle (loan); Charlie Taylor (tribunal); Jordan Botaka (free); Ross Turnbull (released); Luke Murphy (loan); Giuseppe Bellusci (contract terminated); Billy Whitehouse (released)
Leeds' new manager Thomas Christiansen has been busy this summer remodeling the squad and has raided several foreign markets as he looks to build on last season's seventh-placed finish under now-Middlesbrough manager Garry Monk. Leeds had seemed set to seal a play-off place until a late-season collapse when they won just one of their final eight games and were pipped to a top-six spot by Fulham.
Everton centre-back Matthew Pennington has arrived on loan, another good acquisition for the Yorkshire side. He has played seven games in the Premier League and the number of new signings will raise hopes among Whites fans that a play-off place will be within grasp next season.
Like Leon Slutsky at Hull, Christiansen will have to quickly prove he has what it takes to manage in English football after spells in charge of APOEL and AEK Larnaca in Cyprus.
Millwall vs. Leeds United (Saturday, September 16, 2017)
Leeds United vs. Millwall (Saturday, January 20, 2018)
In the last meeting between the sides, an Alex Mowatt free-kick gave Leeds a 1-0 win at Elland Road as Millwall were struggling to avoid relegation from the Championship.