Things don't get any easier for rock-bottom Shrewsbury with the gap to safety currently nine points and a visit from leaders Wycombe.
The Shrews did stun Birmingham here recently, but they'll need to perform even better to become the first team to beat Matt Bloomfield's team in League One since August.
Wycombe might have dropped points in their last two outings, allowing Wrexham to join them on 40 points, but they're now 16 league games unbeaten.
It's top against bottom, so everything points towards an away victory.