Wouters was placed in charge on Wednesday after Ronald Koeman quit the Philips Stadion to join Valencia but the former Holland midfielder could not inspire his troops, even though they did take the lead in the 29th minute through Danko Lazovic.
Kristian Bak Nielsen equalised within three minutes and Miralem Sulejmani netted Heerenveen´s winner with 20 minutes to go - and PSV´s misery was compounded by the late dismissal of Edison Mendez.
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