Sri Lankan skipper Mahela Jayawardene Sunday refused to single out spin sensation Ajantha Mendis as the major threat for Pakistan in the one-day series. The 23-year-old Mendis and his more illustrious partner Muttiah Muralitharan are tipped to hold the aces against the home team in the three-match series which starts here in Karachi from Tuesday. But Jayawardene said Mendis doesn't carry extra burden of expectations. "Mendis hasn't had added pressure and has gone through all the batting line-ups he has come across and is enjoying his challenges," Jayawardene said of his spinner during his arrival press conference. "He knows what his role is, at the same time there are some really good guys around him giving him advice, especially Murali who is a brilliant role model for Ajantha. "Murali is somebody who has worked 18 years and come through very well. As long as Ajantha realises that if he can go at the same path as Murali I'm sure we will have a big match winner for us in the next ten years."