Opener Evin Lewis struck his third one-day international century to help West Indies complete a 3-0 series win over Ireland in Grenada.
Chasing a DLS-adjusted target of 197, Lewis hit 102 off 97 balls to steer his side to a five-wicket win with 64 balls to spare and secure a first home series triumph since 2014 when they beat Bangladesh.
Lewis missed out on a century in the opening game when he ended unbeaten on 99 but he reached three figures in the third and final match, one ball before holing out attempting a match-winning six.
FULL SCORECARD: West Indies v Ireland – third ODI
He struck six fours and five sixes for West Indies, who had beaten Ireland by five wickets in the first match of the series in Barbados and then edged a thrilling second game by one wicket at the same venue.
Nicholas Pooran, who finished unbeaten on 43, sealed victory by pulling Barry McCarthy for four.
Earlier, captain Andy Balbirnie led from the front with 71 as Ireland posted 203 after West Indies opted to make use of a damp start at the National Stadium, where play was twice interrupted by rain during Ireland’s innings.
Balbirnie held the innings together with his ninth ODI half-century but Ireland struggled to build partnerships and his dismissal in the 38th over left the tail vulnerable.
Hayden Walsh was the man to remove Balbirnie and the leg-spinner finished with career-best figures of four for 36 to cap an impressive West Indies bowling display.
The wicketkeeper struggled behind the stumps but made 75 in a match-winning partnership with Chris Woakes.
Craig Overton claimed four wickets for 12 runs in the Bob Willis Trophy match.
The pair turned the tables at Old Trafford with a 139-run stand which turned the tables on the tourists.
England captain Knight, whose side are defending champions, believes it would have been safe to play the tournament.
The pair shared a half-century stand at better than a run a ball to keep an unlikely run-chase alive.
The hosts lost Rory Burns for 10.
Pakistan resumed 244 in front and eight wickets down but added 32 runs in just 16 balls on the fourth morning.
The hosts still face an uphill task to win the series opener at Old Trafford.
The England vice-captain helped drag the hosts back into the first Test.
Chris Woakes Stuart Broad and Ben Stokes help out as the tourists struggle second time around.