The Kolkata Knight Riders lock horns with Kings XI Punjab in the final of IPL 7. This will be their third meeting in this edition. The last time they met was in Qualifier 1 where KKR comfortably outclassed KXIP at the Eden Gardens to book their place in the final. Overall, KKR lead 2-1, with both teams winning a match each in the group stages. KXIP would be gunning for their maiden IPL title while, KKR would be looking to repeat the 2012 heroics. Here are some key battles to watch out for in the final. Robin Uthappa vs Mitchell Johnson This contest could turn out to be a game changer. Robin Uthappa is just unstoppable at the moment but get him out of the picture of KXIP have a chance. He has been the main reason behind KKR's renaissance. His last ten scores read - 47, 65, 47, 46, 80, 40, 67, 83*, 41, 42. 558 runs at an average of 62. He is currently the orange cap holder and it's imperative that KXIP get him early. Mitchell Johnson will be George Bailey's go-to man. After a brilliant last season with Mumbai Indians and his exploits in the Ashes and in South Africa, much expected of the Australian pacer but he hasn't lived up to the expectations so far.