Siem de Jong scored the only goal for PSV, who remain in third place, one point behind Ajax, who still have a game in hand.
Feyenoord were denied a potential goal in the Rotterdam derby against Sparta.
Feyenoord took a big step towards their first Eredivisie title since 1999 after beating defending champions, PSV Eindhoven.
Ajax thrashed Heracles Almelo 4-1 to move five points behind leaders Feyenoord in the Eredivisie.
Feyenoord took another step to the Eredivisie title on Sunday, but needed the aid of one of the tightest goal-line technology decisions you'll see.
Liverpool manager Jurgen Klopp has hailed the potential of Ajax's Kasper Dolberg, stating that the teenage striker has a "great future" ahead of him.