Leandro Bacuna's first-half strike earned Cardiff a 1-0 victory over Stoke in Neil Harris' first home match in charge.
The Curacao international scored his first Bluebirds goal to maintain their new manager's unbeaten start since taking over from Neil Warnock and hand Michael O'Neill his first defeat as Stoke boss.
The defeat kept the Potters in the Sky Bet Championship relegation places, while Cardiff moved up to 10th.
Former Southend United striker Harris, who lives in Eastwood, was appointed Cardiff boss earlier this month.
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