Wolves continued their blistering start to the Coca-Cola Championship season with a 2-1 win over Crystal Palace at Molineux that kept them top of the table.
Sylvan Ebanks-Blake put the home side ahead with a cool finish in the very first minute but a mistake by Neill Collins allowed Paul Ifill (32) to level against the run of play.
Andy Keogh's header (58) restored Wanderers' lead and they held on to make it five straight victories in the league and six unbeaten so far.
Birmingham are level with their midlands rivals on 16 points after an impressive 2-1 victory over Bristol City at Ashton Gate.
A Louis Carey own goal (eight) handed Blues the lead and Cameron Jerome (24) made it two as the visitors dominated from the outset, although Lee Trundle's spectacular effort (79) gave the scoreline respectability.
Preston are third, two points off the pace, thanks to a 2-1 defeat of lowly Nottingham Forest at Deepdale.
Youl Mawene (50) headed North End ahead and Neil Mellor (59) added a second, but Forest were given hope when Mawene scored at the wrong end in the 67th minute.
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