The hosts were unchanged from their dramatic 4-3 victory at QPR on Saturday, while Bolton made three changes from the side that suffered a fifth defeat in six league outings against Preston, with Mark Beevers returning from injury and Pawel Olkowski and Clayton Donaldson recalled.

Lukas Jutkiewicz fired the first shot of note straight at Bolton goalkeeper Remi Matthews after 13 minutes, and seven minutes later Blues midfielder Maikel Kieftenbeld blazed a 25-yard effort narrowly wide.

Bolton front two Donaldson and Josh Magennis made a nuisance of themselves from a long ball in the 36th minute and Craig Noone's shot from the edge of the box had to be smartly saved by Lee Camp before the former Cardiff man curled a follow-up effort wide.

Che Adams found Jutkiewicz with a fine cross six minutes before the break, but the 28-year-old could only deflect the ball onto the roof of the net as he stretched to make contact.

The hosts might have gone ahead in first-half stoppage time, but Gary Gardner lacked composure when the ball fell to him on the edge of the area and his effort was well off target.

David Wheater's header down from a Luke Murphy corner after the break caused chaos in the hosts' defence, with the ball eventually scrambled behind, while Marc Wilson headed wide from Murphy's next set-piece.

Birmingham should have gone ahead after 62 minutes when the lively Adams found Jota in space on the right of the penalty area, but Matthews brilliantly deflected his shot against the woodwork.

Referee Andy Davies decided against booking Connolly for a late challenge on Kerim Mrabti midway through the second half but did reach for a yellow card two minutes later when the Everton loanee fouled Wes Harding.

Bolton made the breakthrough in the 71st minute when Donaldson – who was a menace against his former club throughout – won a free-kick on the right and Connolly headed Murphy's delivery past Camp.

Gardner fired a free-kick over the bar as the hosts sought a quick response and Matthews turned Adams' stoppage-time effort behind, with the Blues failing to turn a late spell of dominance into an equaliser as their play-off hopes were dealt a blow.

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