Birmingham and QPR will seek to stop the rot and get back on track as they meet at St Andrew's on Wednesday night (19:45 GMT).
Blues have lost three straight games for the first time this season to slip to 12th, eight points adrift of the play-offs, having played a game more than sixth-placed Wrexham.
Saturday's 1-0 defeat at Charlton means they have scored only once and conceded seven goals in that run.
QPR have also lost three in a row by a combined score of 11-0.
Sunday's 4-0 home humbling by Middlesbrough left them 16th, two points behind Blues, while their last away game was a 5-0 defeat at Southampton.
Birmingham have lost their past two league games against QPR, last losing three in a row against them in April 2018.
Having won just nine of their first 43 league games against Birmingham (21%), QPR have now won 12 of their past 22 against the Blues (55%).
Birmingham lost 3-1 in their last home league game, last losing consecutively at St Andrew's in March 2024 (3 in a row).
QPR have won just one of their past nine away league games (D4 L4), beating Hull City 3-1 last month.
Birmingham's Jay Stansfield has been involved in 11 goals in his past 14 home league games (7 goals, 4 assists, despite scoring just once in his past nine at St Andrew's.
