With one match to play, Ajax lead PSV Eindhoven on goal difference in the Dutch title race after the pair won again on Sunday to remain neck-and-neck on 81 points each.
The Amsterdam outfit enjoy a goal difference of plus-6 over PSV after a 4-0 win over Twente and face 17th placed De Graafschap next week where they will seek to wrap up a 34th league title.
Defending champions PSV, who have 22 titles, enjoyed a 6-2 win Sunday over relegated Cambuur.
“I still believe,” insisted Eindhoven coach Phillip Cocu. “My philosophy is to remain positive even when you are not in the best situation.”
Cocu takes his charges to seventh placed PEC Zwolle next weekend.
The pair are 21 points clear of Feyenoord who beat Utrecht last week in the Dutch Cup.