Blackburn Rovers will aim to gain further ground on the bottom three when they make the trip to St Andrew's on Friday (15:00 BST).
Rovers are currently four points clear of 22nd placed Leicester City but have had limited time with boss Michael O'Neill during the international break, who was fulfilling his duties as Northern Ireland boss.
Meanwhile Blues are hoping to keep their faint hopes of the play-offs going by remaining imperious on home soil.
Birmingham have won three of their last four league games against Blackburn (L1), as many as they had in their previous 20. They're looking to complete their first league double over Rovers since 1950-51.
Blackburn have lost 1-0 in their last two away league games against Birmingham, last going three visits without a goal between 1987 and 2000.
Birmingham have lost four of their last six league games (W1 D1), having been unbeaten in their previous eight before this (W5 D3).
Blackburn have won 56% of their points away from home this season (24/43). Ignoring point deductions, only Sheffield Wednesday (58%) have earned a higher share on the road in the Championship this term.
Blackburn Rovers have underperformed their expected goals more than any other side in the Championship this season (-12.1), netting just 36 goals from an xG of 48.1
