Having gone through pre-season training at Spurs, the Republic of Ireland international is acutely aware of the strengths and weaknesses of coach Martin Jol's side. He admits their in-form strike force, who have been instrumental in a run of four successive Premiership wins, will pose a serious challenge on Sunday. Doherty said: "They are top players and I've got every respect for all of them. Jermain Defoe is sensational and I also hold Robbie Keane and Fredi Kanoute in high regard. They are in form and will be difficult for us."