ZWOLLE, May 9 (Eredivisie) - Zwolle could still find themselves automatically relegated on the final day of the season after they could only draw against Willem II on Sunday.
To guarantee themselves a spot in the relegation play-offs, Zwolle needed a victory against Willem and for bottom club Volendam to fail to beat NEC Nijmegen.
Volendam were held to a 1-1 draw, a result which means that they can still climb off the bottom of the table and into the play-offs next weekend.
Hennie Spijkerman's Zwolle are just two points off the bottom and vulnerable.
If Zwolle win their final game then they will definitely go into the relegation play-offs along with either Volendam or Vitesse Arnhem, who slipped to second-bottom on Sunday after losing 2-0 at Roda JC.
Such hypothesising would all been unnecessary had Zwolle made the most of their chances against Willem.
The home side had much the better of what limited goalscoring opportunities there were, and even contrived to waste a 57th-minute penalty.
Tom Caluwe was adjudged to have handled the ball inside the area, but Albert Van der Haar missed the resulting penalty and the score remained deadlocked.
Van der Haar tried his best to make amends eight minutes later, however Willem goalkeeper Geert De Vlieger was equal to his well-struck free-kick from outside the box.
Zwolle, who went close in the first half through Jasar Takak and another long-range Van der Haar free-kick, continued to push forward in the closing stages as they sought to claim all three points.
In the 73rd minute, substitute Ivan Cvetkov blazed over the bar from 16 yards when he really should have done better.
Zwolle's last decent effort came five minutes from time when Takak, having taken over the dead-ball responsibilities from Van der Haar, tried his luck from 25 yards.
De Vlieger was not to be denied a clean sheet, however, and his save ensured the two teams finished the game on level terms.
Willem, who are seventh in the table but had no chance of qualifying for the UEFA Cup, threatened only sporadically during the game and their best chance fell to Romano Denneboom on the stroke of half-time.
Caluwe swung a corner into the six-yard box which Denneboom managed to get his head to.
Despite only being three yards out, the striker was unable to direct his effort beyond Johan Van der Werff, allowing the Zwolle goalkeeper to make a comfortable save.