The hosts slipped to 234-6 chasing 322 to win the third and final match in St Kitts, but Jangoo guided them to a four-wicket victory with a sublime 104 not out off only 83 balls.

It was the Caribbean side's first ODI series whitewash over a Test-playing nation in almost four years, since a 3-0 victory against Sri Lanka in March 2021.

The West Indies struggled early in their reply to Bangladesh's 321-5, losing three wickets inside the first five overs.

Sherfane Rutherford made 30 before being dismissed by Taskin Ahmed, but Jangoo put on 132 runs with Keacy Carty to get the Windies back in the hunt.

Jangoo was given a life on 61 when substitute fielder Parvez Hossain Emon dropped the simplest of chances at long-off off Bangladesh leg-spinner Rishad Hossain.

But from the very next ball Hossain got his rewards when Soumya Sarkar held a fine catch to remove Carty for 95, denying the batter from St Maarten a second ODI ton.

The 27-year-old Jangoo brought up his three figures, though, with his fourth maximum, before helping his team ease over the line alongside Gudakesh Motie, who finished unbeaten on 44.

Jangoo became the 18th man to make a hundred on ODI debut and the first for the West Indies since Desmond Haynes against England in 1978.

Earlier, Bangladesh made a commanding total of 321 runs.

The innings featured four half-centuries and set several records, including the team's first 300-plus score of 2024 and the highest sixth-wicket partnership for Bangladesh in ODIs. Mahmudullah Riyad and Jaker Ali stitched together a record 150-run stand for the sixth wicket, propelling the team to a strong finish.

Opting to bat first, Bangladesh faced early troubles as the top-order crumbled. By the third over, the score was a precarious 9/2, with Tanzid Tamim and Litton Das departing in quick succession. Tanzid fell attempting a pull shot off Alzarri Joseph, while Litton edged a wide delivery to Brandon King in the slips.

The recovery began with a stellar partnership between Soumya Sarkar and Mehidy Hasan Miraz. Both batters registered half-centuries, putting on a 145-run stand to stabilize the innings. Miraz, often criticized for his slow scoring, played with aggression this time, reaching his fifty in 68 balls. Soumya, though slower initially, also crossed the milestone in 69 balls.

Despite their efforts, Bangladesh faced a middle-order collapse, losing three wickets for just 26 runs. Soumya fell for 73 off 73 balls, trapped LBW by Gudakesh Motie after an attacking spree that included a six and several boundaries.

Miraz, too, was dismissed shortly after, run out for 77 following a sharp throw from Sherfane Rutherford. Afif Hossain added 15 runs before mistiming a shot to mid-wicket off Rutherford’s bowling.

The highlight of the innings came in the death overs when Jaker and Mahmudullah joined forces. Their 150-run partnership not only steadied the ship but also propelled Bangladesh to their second-highest total against the West Indies. Jaker, in particular, displayed his class, taking the attack to the bowlers, while Mahmudullah anchored the innings with his experience.

The score of 321 stands as Bangladesh's highest first-innings total against the West Indies, surpassing their chase of 322 in the 2019 World Cup.