Millwall beat Albion 3-0 in the Sky Bet Championship on Saturday afternoon.
Ryan Mason’s men were unable to back up their midweek win at Norwich, as goals from Jake Cooper, Femi Azeez and Zak Sturge handed the Lions all three points.
Millwall made a better start in the capital, with Chris Mepham diverting Billy Mitchell’s powerful attempt over before Josh Griffiths cleverly stopped Cooper’s header.
But Albion’s goalkeeper could do nothing to prevent Cooper sweeping home the opener on the 18-minute mark - and chances were limited during the rest of the first period, leaving them ahead come half-time.
Unfortunately for the Baggies, Millwall extended their advantage following the restart via Azeez’s curling long-range strike.
And Sturge’s effort during the final 20 minutes ensured the hosts would finish victorious - sending Albion into the international break sat seventh after nine games.
Albion: Griffiths, Campbell, Phillips, Mepham, Styles, Molumby (Diakite 79), Collyer (Mowatt 79), Wallace (Maja 62), Price (Iling-Junior 62), Johnston (Bostock 89), Heggebø.
Substitutes: Wildsmith, Bielik, Gilchrist, Deeming.