Curran on his own part has hit 14 sixes in his seven Tests in 2018, more than any other batsman.
Meanwhile, the pair of Buttler and Curran led England out of trouble and into a promising position.
And that was on day one of the second Test against the Sri Lankans which took place in Pallekele.
The tourists fell to 89-4 on a pitch showing prodigious turn before Buttler then hit a wonderful 63 off 67 balls.
England head coach, Trevor Bayliss had suggested that “anything is possible” for his team when they play against Sri Lanka.
Meanwhile, the Europeans have not won a Test series in Sri Lanka since 2001 when they secured a 2-1 triumph.
They have also been struggling a whole lot whenever they are playing away from home in the last few weeks.
And they are also still to win a Test series abroad since their tour of South Africa back in 2015/16.
There have also been reports from the media that Bayliss could drop pace bowler, Stuart Broad for the first Test.
And that is set to be in a bid by the gaffer to allow England use yet another spin bowler.
During an interview session he had with BBC cricket correspondent, Jonathan Agnew, Bayliss said that “anything is a possibility here”.
“To win any Test match, you have got to take 20 wickets.
“And we have also got to decide the best way for us to do that,” the Australian chief trainer said.
England rule Bairstow out of Galle first Test against Sri Lanka
England have ruled wicketkeeper, Jonny Bairstow out of the first Test against Sri Lanka which will take place in Galle.
Bairstow is missing out of the match against the Sri Lankans on Tuesday as a result of an ankle injury.
The 29-year-old twisted his ankle in the process of playing football during training during the one-day series.
And that very incident had actually made him to miss the last two 50-over matches for the top European nation.
England coach, Trevor Bayliss said the tourists were yet to decide whether Jos Buttler or Ben Foakes would keep in Galle.
“That decision could impact the rest of the team,” Bayliss made the disclosure to top British media outlet, BBC Sport.
England had actually made use of nothing less than three wicketkeepers in their first red-ball warm-up game.
While on the other hand, the duo of Buttler and Foakes had shared the gloves in the second warm-up encounter.
One-day keeper, Buttler has so far made 25 Test appearances while having also kept in the longer format before.
But Foakes on his own part is yet to pick up any international cap for the England cricket team.