"When it comes to proven performers, you need not think about their skill level. He might not be the same as he was when he was 25 or 26, but he is much better-equipped with the mental side of the game. From what I saw during the CSK training, it never looked like Dhoni was away from the game for any length of time. He didn't look rusty even on the first day of training. That is his greatness," Balaji was quoted as saying by The Times of India during a chat on Wednesday.