Ajax 1-2 PSV
Gaston Pereiro scored his first two goals for Dutch champions PSV Eindhoven as leaders Ajax slipped to their first league defeat of the season.
Ajax, who had not conceded a goal in their previous three home games, went behind when Pereiro fired into the roof of the net after seven minutes.
Frank de Boer's side quickly levelled through Amin Younes's curling effort.
But PSV were the better side and earned a 79th-minute winner when Pereiro, 20, cut in to steer home a left-foot shot.
Uruguay international Pereiro joined PSV from Nacional in the summer to help fill the gap left by the departures of Memphis Depay and Georginio Wijnaldum to the Premier League.
He was given his first league start by coach Phillip Cocu and responded with the goals that lifted PSV up to fourth place in the Eredevisie table and within two points of Ajax.
The home side hit the post in the second half through Viktor Fischer with the score at 1-1.
Despite missing a number of players through injury, including top scorer Luuk de Jong, PSV made the better chances and also had efforts from Jurgen Locadia and Jeffrey Bruma cleared off the line.
Earlier on Sunday, Feyenoord won 2-1 at bottom club De Graafschap to move second in the table behind Ajax on goal difference.
Michiel Kramer and Eljero Elia scored their third goals of the season to leave De Graafschap still without a win after eight games.
- 23TeteBooked at 51mins
- 3VeltmanBooked at 65mins
- 35DijksBooked at 88mins
- 27GudeljSubstituted forMilikat 74'minutes
- 21El GhaziSubstituted forSchöneat 81'minutes
- 11YounesSubstituted forSereroat 64'minutes
- 2van Rhijn
- 4van der Hoorn
- 5BrumaBooked at 17mins
- 29HendrixSubstituted forSchaarsat 89'minutes
- 18GuardadoBooked at 29minsSubstituted forMaherat 72'minutes
- 7PereiroBooked at 90mins
- 19LocadiaBooked at 55mins
- 11NarsinghSubstituted forBergwijnat 86'minutes
- 30de Wijs
- Bas Nijhuis
- Shots on Target