Sri Lanka bowling coach Rumesh Ratnayake was critical of Dilruwan Perera and Lakshan Sandakan after the spinners were made to suffer by Murali Vijay and Virat Kohli on day one of the third Test in Delhi.
Captain Kohli (156 not out) became the fourth-fastest Indian to reach 5,000 Test runs and Vijay made 155 as India closed on 371-4 at the Feroz Shah Kotla Stadium.
The prolific Kohli has now passed 100 in his last three Test innings and became the fifth-0fastest to 20 Test centuries on Saturday, putting on 283 for the third wicket with Vijay to put India well on top and on course to wrap up a series win after a crushing victory in Nagpur.
Ratnayake felt Dilruwan (1-97), who dismissed Shikhar Dhawan to claim his 100th Test wicket, and Sandakan (2-110) did not do themselves justice on another gruelling day for the tourists.
"Everybody knows that Indian batsmen are at a different level but having said that, it's not an excuse," said Ratnayake.
"Although he [Dilruwan] got 100 wickets, he will be very disappointed with the manner in which he bowled in some of the spells. The bowlers have given India 70 runs too many in my view.
"He is comfortable with his normal Chinaman deliveries (spinning the ball in to the right-handers) but the googly is the thing that we see might trouble the batsmen which he hides very well. It is not very easy to read.
"He should bring it on and mix it."
Ratnayake added: "Sandakan should have been bringing in the googly much earlier into play and that's one of the things we spoke at tea and which he did only at the end [got Vijay and Rahane].
"So we were asking why he didn't bring it on more. It might be a confidence issue but we will certainly discuss."