Karunaratne, who completed his 15th Test half-century early in the afternoon session, has kept alive Sri Lanka's hopes of posting a respectable total.
Interestingly, if Chandimal plays, it will also be the two captains locking horns with the history of ball tampering incidents behind them.
Preparing for second-ranked South Africa is not the only challenge for the hosts.
It will be an intriguing battle when both Sri Lanka and South Africa will square off for the first time since 2016 in a two-match Test series starting from July 12 (Thursday) at Galle.
But Karunaratne rarely attempted to counter attack, preferring instead to steadily build his innings, which featured 13 fours and an impressive six off Dale Steyn in the first session. "But the most important thing is that of those 18 years, I wasn't able to play for Sri Lanka for about seven of those years", he said.
Mike Treen to join ship trying to break Israel's blockade
Israel and Egypt, in response have said that the blockade is an necessary security measure against the threat of militants. The ship arrived at the port of Ajacio in Corsica, France on July 5, where it stayed till July 8.
Roger Stone: I'm Probably The Unnamed Person In The New Mueller Indictment
Stone also said that the US had interfered in Russian elections 20 years ago and therefore were in no position to complain. He denied that to the Washington Post .
Trump did not threaten to leave NATO, Macron says
So I think that's inappropriate also'. "And I think that's very inappropriate". So we improved a lot but there's still work to be done.
If Steyn indeed plays, he will be looking to overhaul Shaun Pollock to become the highest Test wicket-taker for South Africa. If Chandimal misses out, pacer Suranga Lakmal could lead the team once again. "KG will take over that mantle [from Steyn]".
The South Africans have won 14 of the 25 Tests between the countries, with only five victories for Sri Lanka.
But Sri Lankan batsman Roshen Silva also struck a confident note, saying they will make most of the home advantage in conditions that favour spin more than seam. South Africa will aim to repeat their fine show in 2014 when they beat Sri Lanka 1-0 in their own den. Rabada was then introduced for his third spell, replacing Steyn from the Dutch Fort End, and he took two wickets in his first three deliveries.
Sri Lanka's veteran spinner Rangana Herath may retire from global cricket in November, following the three-match Test series against England.
Karunaratne, who missed the Windies tour due to injury, stitched together stands of 48 and 63 with Lakmal and Lakshan Sandakan respectively for the final two wickets after Sri Lanka tumbled from 115-2 to 176-8.