Blues have upper hand in recent meetingspublished at 14:45 Greenwich Mean Time 3 February
West Brom v Birmingham (15:00 GMT)
Ged Scott
BBC Sport at The Hawthorns
As to just how expectant Albion boss Carlos Corberan feels today about his team's on-field chances, well, Albion have lost all of their last four meetings with Blues, including last season's Scott Hogan-inspired 3-2 home loss - one of Steve Bruce's final games in charge, a month before the Spaniard took over.
Having also lost 1-0 at St Andrew's under Bruce to a Lyle Taylor penalty five months earlier in April 2022, Albion then lost to Blues for a third time in a row back in February 2023 when goals from on-loan Hannibal Mejbri and Krystian Bielik earned their hosts a 2-0 win.
And then Blues boss John Eustace made it three derby wins out of three when his side came from behind to an early John Swift strike to beat Albion 3-1 in early October.
Juninho Bacuna's equalising penalty, former Wolves defender Dion Sanderson's late first-half header and substitute Gary Gardner's curled late free-kick, only five minutes after coming on, added up to a euphoric night at St Andrew's.
Yet, just three days later, Blues' American owners sacked Eustace, brought in Wayne Rooney on a ticket of "no-fear football". And it was only when they began to fear relegation three months later and sacked Rooney after just two wins in 14 games that they turned to Tony Mowbray.
Albion fans know all about Mowbray. After coming in as successor to Baggies legend Bryan Robson in October 2006, he led Albion to the Championship play-offs, then took them up as champions a year later. And, although they came straight back down, after which he left to take over Celtic in June 2009, he remains popular wherever he has been - a reliable old pair of hands whose teams play nice football and he has so far picked up four points from his two league games in charge of Blues.
Blues may be 15 places adrift of Albion - but, in terms of points, it is only a 13-point margin. And, with new men on parade for both clubs this afternoon, it really is very hard to know just what to expect.