(Cricinfo) – Amir Jangoo amassed 233, Roston Chase hit 194, and through a record-breaking 401-run partnership, the pair slow-roasted Sri Lanka on day three in Antigua. Their gargantuan stand delivered West Indies to a position of extraordinary strength, securing them a 318-run first innings lead. That in the four overs they got to bowl at Sri Lanka, West Indies dismissed the dangerous Pathum Nissanka, and created other chances, buoying them further heading into day four.

Jangoo and Chase now not only have the highest sixth-wicket stand in the history of Test cricket, they also have the second-highest partnership for West Indies, behind only Garfield Sobers and Conrad Hunte. Both batters improved on their previous first-class high scores, Roston Chase easily beating his 137 not out, and Jangoo surpassing his domestic 219.

That Jangoo produced a knock of such astonishing concentration, and expansive range, in just his third Test innings was especially impressive. Until he got out attempting to accelerate about midway through the last session, his innings was largely chanceless. He batted 373 deliveries on his own, and he and Chase batted 100.2 overs, seeing out three complete sessions together. Though they had begun slowly, both batters sped up through the day and were finding boundaries off both the quicks and spinners through the second and third sessions of the day.