By Alex Livie
Last Updated: 01/01/70 1:00am
Ajax ended their mini slump with a win over RKC Waalwijk on Saturday, meaning Guus Hiddink's side needed to fashion a response to keep the title race alive.
Utrecht are a solid force at the Nieuw Galgenwaard and they held their own for the majority of the first half.
However, it would appear Foeke Booy's troops switched off moments before the break as they were hit by two goals in as many minutes by Wilfred Bouma and Mark van Bommel.
Utrecht battled hard after the break, but the task proved beyond them as Hiddink's defence held firm.
PSV exploited gaps in Utrecht's defence late in the game, as South Korean international Park Ji-sung put the game beyond doubt with a goal five minutes from time and van Bommel teed up Jan Vennegoor of Hesselink to net an injury-time fourth.
Feyenoord fought back from two goals down to secure a point from their home game with Heerenveen.
Bert van Marwijk's side have struggled for consistency this term and they fell behind to a Stefan Selakovic goal on 12 minutes.
Things looked grim for the Kuip outfit when Richard Knopper doubled the advantage after the break.
However, the home side raised their game and two goals from Thomas Buffel in the final quarter-hour secured a point for the Rotterdammers.
Volendam and Vitesse Arnhem both remain in trouble after playing out a 0-0 draw.