AMSTERDAM, April 6 (Reuters) - PSV Eindhoven closed in on the Dutch league title on Sunday, scoring a goal in each half to beat Heracles Almelo 2-0. Timmy Simons fired home the opener in the 12th minute from 20 metres out and Peruvian Jefferson Farfan curled a free-kick around the wall to seal the victory 10 minutes before time. With two matches remaining, PSV are top with 68 points, five clear of Ajax Amsterdam who cruised to a 4-1 home win over Graafschap Doetinchem with Klaas Jan Huntelaar scoring a hat-trick. George Ogararu set up Huntelaar to open the scoring after three minutes and the striker headed home his second five minutes later. Niklas Tarvajarvi pulled one back for Graafschap before Huntelaar restored the advantage with his 32nd league goal of the season just before the interval. Kenneth Perez added the fourth in the second half. NAC Breda won 2-1 at Groningen to remain third with 60 points. Ahmed Ammi and Matthew Amoah scored first half goals with Goran Lovre grabbing a consolatio early in the second half. Fourth-placed Twente Enschede, on 58 points, beat Excelsior Rotterdam 1-0 on Saturday. Heerenveen lie a point further behind in fifth after their 3-2 victory over Willem II Tilburg. Feyenoord are sixth, trailing Heerenveen on goal difference, following their 3-1 victory over Utrecht. Luigi Bruins, Denny Landzaat and Nuri Sahin were all on target for the home side. In Sunday's other game, Mounir El Hamdaoui struck twice in the second half to hand mid-table AZ Alkmaar a 3-2 win at VVV-Venlo, who led twice through Jason Oost and Nourdin Amrabat.