The 26-year-old, the division´s top scorer last year, netted a hat-trick inside the opening 19 minutes and completed his personal haul after the break.
Feyenoord are the new leaders after Nicky Hofs´ 55th-minute goal gave them a 1-0 win at Vitesse Arnhem, as Ajax, who started the weekend on top, could only manage a 2-2 draw at Sparta Rotterdam.
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