Bowyer's goal was his fourth of an impressive season
A clever goal from Lee Bowyer earned Birmingham victory over Fulham as Alex McLeish's men extended their unbeaten run to four matches.
Bowyer latched on to James McFadden's lofted pass before cushioning the ball past Mark Schwarzer for his fourth goal of the season.
Fulham dominated the second half and almost levelled when Clint Dempsey's header was tipped over by Joe Hart.
But Birmingham held firm to inflict Fulham's first loss in six games.
It was another impressive performance from McLeish's side, who have now accrued 15 points from 13 games to sit comfortably in mid-table.
The Scotsman has moulded a side that is difficult to beat and, in McFadden and Bowyer, has players capable of unlocking tight defences.
Fulham boss Roy Hodgson left Damien Duff on the bench following his midweek exertions with the Republic of Ireland. Zoltan Gera took his place on the left, with Simon Davies making his first start of the season following an ankle injury at Erik Nevland's expense.
McLeish happy with 'classy' Bowyer
The visitors had the game's first opening when Bobby Zamora found space on the left and, ignoring well-placed team-mates to his right, curled a shot well wide of the post.
Birmingham went close to taking the lead when a McFadden cross was deflected on to Cameron Jerome's chest and into the arms of a grateful Schwarzer.
Moments later, the home side went in front, with McFadden again providing the creative spark.
The Scotland winger spotted Bowyer's well-timed run and lofted a pinpoint pass into his path. The midfielder, still with work to do, reached the ball ahead of the advancing Schwarzer and clipped it past the keeper.
It was a goal reminiscent of Bowyer's prime at Leeds, a late darting run into the box followed by a clinical finish.
In driving rain at St Andrews, Fulham found their feet as the half went on, only to find Birmingham's defence in good working order. Gera found the time in the area to line up a shot which was superbly blocked by Roger Johnson.
Defeat doesn't dent confidence - Hodgson
Fulham made the brighter start to the second period. Zamora cushioned Paul Konchesky's cross into the path of Gera, but the Hungarian's half-volley bounced over the bar.
The Londoners continued to enjoy the majority of the possession and came close the equalising when Dempsey's header from Stephen Kelly's cross drew an acrobatic save from Hart.
It was the kind of stop that will do Hart's chances of making England's World Cup squad no harm.
Hodgson sent on Duff for Kelly after 73 minutes and the Irishman made his presence felt with a low shot from outside the area which whistled past Hart's post.
But Fulham still could not break down Birmingham's impressive back line, and McLeish's men held on for a well-earned three points.
Fulham manager Roy Hodgson: "We did our very best to score a goal but when we did get an opportunity the goalkeeper was in fine form or someone got in a good block.
"I don't think we could have had more possession, more crosses or corners, it was just a question of the ball not falling kindly enough.
"We had a few players missing but the players who came in did really well."
Birmingham manager Alex McLeish: "I'm delighted because we played a tough game today.
"Sometimes it wasn't too pretty. We've played better than that and lost games but we showed we can win a match with strength and resilience.
"As long as they keep their feet on the ground and show the same level of resilience and application we can have a good season."
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