Harbhajan Singh does not doubt mystery spinner Ajantha Mendis’ potentials but the star off-spinner believes it is old trickster Muttiah Muralitharan who would pose bigger threat for the Indian batsmen in the forthcoming Test series.

Harbhajan heaps praise on Mendis, who ran through India’s famed ODI batting order in the Asia Cup final in Karachi, and said it was an extraordinary display of quality spin bowling.

“It was a treat to watch Mendis bowl during the Asia Cup final,” Harbhajan told ESPN’s ‘Sportscenter’ programme.

“The deliveries with which he got Yuvraj Singh, Rohit Sharma and even RP Singh were outstanding. I have seen people doing this with a tennis ball but it is incredible that he is doing it with a cricket ball. There is so much to learn from Mendis,” said Harbhajan.