Dhawan was on 31 at the time when his catch was dropped and the opener went on to score 190 off 168 deliveries.
"It is hard to appreciate bowlers' effort after you concede 400 runs in a day. India are a very strong side. We dropped a catch of Dhawan and then paid a price. Not sure what
would have happened had that catch been taken," said the manager at the press conference.
Sri Lanka suffered a double blow as Asela Gunaratne sustained a broken thumb on his left hand while attempting a catch of Dhawan off the bowling of Lahiru Kumara. He has been subsequently ruled out of the remainder of the Test series and the hosts will be playing this game with just 10 players.
"It was a double blow. We dropped the catch and lost a player," said Gurusinha.
"It's sad. He will undergo a surgery in a short while. Most probably he will be out for a minimum of four weeks. We will know in the next 48 hours about the time frame. He has
fractured his thumb in three places. As soon as we saw the x-rays we knew it was very serious and we rushed him to Colombo," the manager added.
The Lankan bowling attack came a cropper as it simply failed to contain the Indian batsmen, particularly Dhawan who punished them with 31 fours and scored at a rate in excess of
100. He put on 253 runs with Cheteshwar Pujara, who also scored a century, remaining unbeaten at stumps on 144.
"We know Dhawan wasn't in the initial squad but then he came back into the side and showed the selectors what he is capable of. It was a good track for him and we also ended up
bowling to his strength, and he capitalised on that," said Gurusinha.
"But we have to be honest that we didn't bowl well. Nuwan Pradeep was the only outstanding bowler I thought. It's a really good batting wicket. I heard Virat (Kohli) talking that
it is a good batting wicket. We bowled on both sides of the wicket as well. Dhawan just took over the game. His 190-run knock was one reason we find ourselves in this situation."
However, Gurusinha expressed confidence that his batsmen could still turn the game around with a good show.
"They will recall the manner in which Lanka beat India turning around a similarly dominant performance from the visitors on day one of the series back in 2015. You never
know. This is Galle and after scoring 600 runs you can still lose a Test match.
"Our batsmen have to just to go out and play good cricket. Let's see what happens in the last two days. We need to first try and get India out tomorrow. We will probably bat somewhere tomorrow," he said.
First Published: July 26, 2017, 8:04 PM IST