Millwall's Under 23s were defeated 3-0 by Bristol City in the Professional Development League on Tuesday afternoon.
Zac Smith, Louis Britton and Tommy Conway all found the back of the net in the first-half to condemn Kevin Nugent's side to defeat.
Next up for The Lions is a home game with Birmingham City on Tuesday 13th April.
Millwall: Gillmore, Moss, Tiensia, Ransom (Davis 46'), A. Mitchell, Muller, Leahy, Skeffington (Allen 76'), Alexander, O'Brien, Duncan. Subs not used: Hammond, Abdulmalik, Penney.