Leeds set up an FA Cup tie at home to Tottenham after coming from behind to dump out Birmingham 2-1 in their third-round replay.
Wade Elliott put Blues ahead shortly after the half-hour mark, just as he had done in the initial meeting which finished 1-1 10 days ago.
But once again Leeds levelled after the break, this time courtesy of Ross McCormack's first goal since September - an effort which had not looked like coming with 19-goal striker Luciano Becchio missing due to illness.
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