In the lush and verdant shadow of the hills towering over the Darren Sammy Stadium, England could finally breathe again. It was tough going at times, and a cynic might be tempted to conclude that their luck came in when they least needed it. But as Jos Buttler and Ben Stokes eased their way towards stumps with an unbroken partnership of 124, we were again reminded that Test cricket is a game that rewards the persistent. It was a day of two halves, as England’s top order again laboured in the heat and for a time their middle order looked like folding again. But after some hair-raising early moments, Buttler and Stokes played with application and maturity, securing England’s best day of the series so far, albeit clearing a lamentably low bar. Stokes looked a touch leaden-footed at times, still evidently labouring under the pain of an injured heel that had almost forced him out of this Test match. But it was he who got England out of the mud at 107-4, moving the pace along and earning full value for his shots on a slow outfield. Buttler, meanwhile, now has eight fifties in 23 innings and an average of…