Birmingham edged another point clear of the Championship relegation zone after being held 0-0 by already relegated Rotherham in a game which was held up by a medical emergency in the stands.
The Blues were left frustrated by Rotherham, who had Steve Evans back in the dugout after his shock return from Stevenage midweek, and the stalemate left the visitors just two points clear of the bottom three with two games to play.
Birmingham had a chance within the first two minutes when Keshi Anderson burst down the left flank and found Tyler Roberts at the backpost but his volley was off target.
The match was stopped after nine minutes due to a medical emergency in the home stand, with paramedics rushed over to give treatment to a supporter.
Referee Keith Stroud took the players off the field for more than 20 minutes and after the supporter was taken to hospital, the game resumed around 3.45pm.
Anderson was again causing problems after the restart and he got a shot away which Viktor Johansson had to kick away for a corner.
Rotherham’s Jordan Hugill then headed tamely at John Ruddy after Sebastian Revan had picked him out with a left-wing cross.
The Millers were hit by two first-half injuries, with Cafu and Peter Kioso both having to be replaced.
A strike from Oliver Rathbone from the edge of the box looked to be goal-bound but Krystian Bielik bravely put his head in the way.
Birmingham brought Koji Miyoshi on to liven up their attack at the break and he almost made an instant impact when he cut inside and saw his shot diverted wide.
A long ball to Jay Stansfield almost led to an opportunity but his touch was too heavy and it ran through into Johansson’s grasp.
Stansfield thought he had given Birmingham the lead when he lashed in from Paik Seung-ho’s free-kick but it was ruled out for offside by the assistant referee.
Arvin Appiah had a good opportunity to strike at the other end after he burst forward but his low shot was clung on to by Ruddy.
Scott Hogan was brought on for the closing stages by interim boss Gary Rowett and he almost got on the end of Lee Buchanan’s near-post cross.
Rotherham threatened to nick the points when the ball fell to Sam Nombe in the box but the record signing hooked over the chance.
Miyoshi should really have grabbed the winner when he was found by Bielik on goal but his weak effort was kept out by Johansson.
Birmingham survived a scare in added on time as Revan’s volley was beaten away by Ruddy.