Millwall's Under 23s were defeated 2-1 by a strong West Ham United side in their final pre-season fixture on Tuesday afternoon.
Dan Chesters and Kamarai Swyer put The Hammers into a 2-0 lead at their training ground, and although Nana Boateng reduced the arrears with 72 minutes on the clock, Kevin Nugent's side suffered defeat.
The Lions begin their 2021/22 Professional Development League campaign against Crewe Alexandra on Tuesday 17th August.
Millwall Under 23s: Wright, Walker, A. Mitchell, Penney, Topalloj, Tiensia, Moss, Davis (Trialist B, 85'), Boateng, O'Brien (Drozd 56'), Allen (Trialist A, 56'). Subs not used: Gillmore, Trialist C.