"He (Ashwin) has got fantastic variations and he adopts himself in three formats of the game which is difficult. I think, in between he tried something which did not click and he came back to his own bowling. We had Anil Kumble, Harbhajan Singh and lot of spinners who were strike bowlers and now I think he is our main strike bowler. Any captain will be more than happy to have him (in the side)," Raju said.
Raju added, "I think he doesn't have to try much and just bowl the way he knows. People now realise all over the world that he can be a match winner and he's has been doing that now again and again. As a spinner (myself) I am happy that spinners are winning more man-of-the series nowadays which is good for us."
Ashwin, who took 62 wickets in nine Tests in 2014 including 31 scalps in the four matches against South Africa, became the first India bowler since Bishan Singh Bedi in 1973 to achieve the milestone of finishing the year on top.
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On left-arm spinners Ravindra Jadeja and Axar Patel, Raju noted that it is always nice to have competition.
"And when there is healthy competition it is always a headache for selectors. This year we are going to have 13 games in India. Spin is going to play a vital part and we need lot of players in good form and good rhythm. Some bowlers might get injured and they might be tired and I think they also deserve a break in between."
"It is same when you go abroad, it is always the spinner all-rounder who is going to be vital and you need the all-rounders who can bowl the medium pace and can bat and then where you can accommodate three spinners.