Albion beat Millwall 2-0 at The Hawthorns earlier this season courtesy of second-half goals from Dwight Gayle and Kieran Gibbs.
The Baggies hadn't faced the Lions for over 14 years, and it wasn't until after the hour mark that Albion were able to unlock the Lions.
Watch free-to-view highlights of the game above or read the full match report here.
