Skipper Virat Kohli, who is happy with KL Rahul's timely hundred at No 4 slot, is not overtly worried with Shikhar Dhawan and Rohit Sharma's patchy form in the two World Cup warm-up games ahead of the tournament proper.The skipper gave enough indications that Rahul has sealed his spot at No 4 with a 99-ball-108 against Bangladesh in the final warm-up game which India won by 95 runs.