Italian Graziano Pelle scored a second-half double to give Feyenoord a 2-1 home win over Groningen on Sunday and fourth place in the Dutch league.
PSV Eindhoven, 6-1 winners over NAC Breda on Saturday, are top with 40 points after 18 matches, ahead of Twente Enschede, who beat AZ Alkmaar 3-0, on goal difference.
Ajax Amsterdam are third with 37 points after being held to a 0-0 draw by Utrecht and with a better goal difference then Feyenoord. The arch-rivals will meet in Amsterdam after the winter break, on January 20.
Feyenoord and Groningen endured a lacklustre first half but 13 minutes after the break Pelle notched up the opener from a corner kick by Jordy Clasie.
Groningen defender Virgil van Dijk levelled the score 13 minutes before time when he picked up a deflected cross and scored but, with three minutes remaining, Pelle struck a tight-angled shot to settle the match.
"[It was] a difficult first half in which we created nothing but we turned the tide after the break because we have a striker who is decisive," coach Ronald Koeman told reporters.
"Last year we had John Guidetti who did perfectly and added some character to the team but Pelle is not only scoring but also always very valuable as target-man," he said of the Italian who was signed on loan from Parma on the final day of the August transfer window.
Ajax, who had won their previous six matches, overwhelmed Utrecht in the first half and created several chances but Siem de Jong, Derk Boerrigter and Viktor Fischer wasted them.
Utrecht, who have now gone six league matches unbeaten against Ajax, finished with 10 men after a late second booking for Dave Bulthuis.
Willem II Tilburg finished the first half of the season bottom of the league with 12 points despite a 0-0 draw at neighbours RKC Waalwijk on Sunday.
Borussia Dortmund's Mario Gotze ruled out of Champions League final against Bayern Munich
Malaga coach Manuel Pellegrini will leave the La Liga club at the end of the current season
Stoke City and manager Tony Pulis part company by mutual agreement after seven years
Andy Carroll pulls out of England's friendly internationals against Ireland and Brazil
Ten years on, the legends speak to FFT
Your questions answered by an A to Z of legends
He's here, he's there, he's...
The cost of Premier League away travel
Nike CR7 IX for you
FourFourTwo is brought to you by Haymarket Consumer Media & FourFourTwo is part of Haymarket Sport
| International Licensing | © Haymarket Media Group 2010