"Obviously, MS has his reasons. He's an highly experienced successful captain. And, that's the hard thing about T20 from the captain's point of view," Katich told reporters on the sidelines of KKR training session, ahead of their Saturday's clash against Rising Pune Supergiants.
Ashwin has not bowled his quota of four overs in 10 of his last 20 Twenty20 games that included five games for Rising Pune Supergiants in the ongoing IPL as opinions have been divided.
"It's never easy. I think whether it's based on form, the gut feel or the actual conditions, there's obviously a reason. MS went on that path without doubt for a reason. I guess he's the man to answer and not me..."
Slipped to third place after their loss to Gujarat Lions, KKR have to win a minimum two matches from their remaining four matches so as to make the playoff and Katich said they're not taking it easy as they had lost out on a last-four berth narrowly in 2015.
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"Hopefully, we turn it around and take some positive momentum into a possible playoff campaign. There's still a lot of work to go. We don't assume that it's given after what happened last year. We want to make sure that we don't leave the job till the last game. I thinks it's going to be a tight tournament as we see the points table at the moment. The next four games are vital to make sure we finish in a good position."
Asked about their spinners, he said: "I don't think we're concerned how our spinners have performed, different times all have played vital roles."
Katich also had high praise for his fellow Australian legspinner Adam Zampa who grabbed a six-wicket haul but only to lose to Sunrisers Hyderabad by four runs.
"Zampa had a very good game in their last match. He has not had many opportunities in this tournament. He did a very good job but they obviously fell short with the bat. He's a very good young prospect."
Katich further said the fourth wicket on which the Kings XI Punjab match was held would be used for tomorrow's game.
"I think the wicket on which we played Kings XI but probably it did not spin as much as we would have thought."
Their loss to Hyderabad meant Pune's hopes to qualify for play-offs is as good as over but Katich said they're not taking them lightly.
"Every game we play will be tough. It's such an even competition. The same amount of plan and preparation go into every team we play. We can't just roll up and expect to win. We have to work hard to win. Pune missed out last night but Bangalore still could win the four games."
"We're pretty positive he will be fit for Saturday. He's feeling a lot better given that we had a bit of break since our last game against Gujarat.