Joao Pedro scores from the penalty spot (Image: Richard Parkes)
Albion cruised through to the fifth round - after twice taking command at Bramall Lane.
They let slip a 2-0 lead at Sheffield United but were 5-2 winners as Joao Pedro completed a hat-trick.
Brian Owen looks at another fun FA Cup tie with one or two notable individual performances and a couple of less impressive moments.
There is also a check on what else has been going on, what lies ahead and the latest transfer story doing the rounds.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here