Ajay Jayaram today entered the quarterfinals of the Malaysia Open Super Series with a hard-fought victory over Denmark's Viktor Axelsen in a men's singles match in Kuching.The unseeded Jayaram stunned Axelsen, seeded fourth, 9-21, 21-14 21-19 in a match that lasted 44 minutes.Jayaram will next clash with fifth seeded Son Wan Ho of South Korea.