Substitute Jordan James struck deep into injury time to save the Blues as the battle of the new managers ended all square with Luke Williams' Swansea at St Andrew's.
Harry Darling put the visitors ahead, before Siriki Dembele quickly equalised, only for Jamal Lowe to restore the Swans' lead after the break before Wales international James drove home in the 95th minute.
Darling also hit the bar, but Blues wasted several chances as the hosts ushered in the Mowbray era after Wayne Rooney's departure.
"We could have scored five goals with the chances we had in the first half," said Mowbray.
"There were chances right in front of the goals where we had shots blocked and then (Siriki) Dembele ran through at the start of the second half I didn't see Swansea having those chances.
Esta historia es de la edición January 14, 2024 de The Football League Paper.
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Esta historia es de la edición January 14, 2024 de The Football League Paper.
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LUKE BOOSTED BY WALES ACE LIAM
Swans bid to mark new era in style...
MATT'S DELIGHT OVER RECORD
WYCOMBE boss Wanderers Matt Bloomfield hailed his history-makers after victory at Lincoln City.
TON-UP IAN ENJOYS HIS SPECIAL WIN
AN Evatt described his 100th win as Bolton boss as very special, although he needed Aaron Collins' injurytime goal to bring up the three figures.
DONS LACK A CLINICAL EDGE AS SADDLERS GRAB POINTS
NATHAN Lowe's strike inspired promotion-chasing Walsall to victory over AFC Wimbledon at the Cherry Red Records Stadium.
SUB GRIMES IS IN-SPIRED TO HEAD THE WINNER
CAPTAIN Jamie Grimes headed in a late winner for Chesterfield after a game of very few chances appeared destined to remain goalless.`
COBBLERS TEST IN TROPHY FOR POSH
HOLDERS Peterborough United have been drawn against fellow League One side Northampton Town in the Round of 32 of the newly-named Vertu Trophy.
HORNETS REMINDED OF GRAY'S BRILLIANCE
WAYNE Rooney expressed his delight as Plymouth extended their unbeaten league home run to six after Andre Gray's last-gasp leveller.
MARTI DOUBTING JOB AFTER DRAW
Rangers home run continues
BIG MAC'S ON TARGET TO SEE OFF THE TIGERS
LUTON boss Rob Edwards felt it was a very good day at the office as his team turned in a gritty performance to beat Hull.
Rohl confident Owls
DANNY Rohl said getting results is the only thing missing as his Owls were held at home by Cardiff.
