NEW DELHI - Ashish Nehra will undergo surgery on his right knee, to repair a high-grade tendon injury he sustained during his IPL stint with Sunrisers Hyderabad, the BCCI said on Tuesday. Nehra, 37, sustained the injury during the match against Kings XI Punjab on May 15, when he pulled up while running in to bowl. While the extent of his injury was unknown then, Nehra was advised to consult Dr Andrew Williams, an orthopaedic specialist in London, and the surgery is expected to take place soon.