Barbados batted first on Saturday after being put in by the Jamaicans and made 200-9 declared off 62.4 overs in their first innings.
Raneico Smith led the way with 50 off 57 balls including seven fours and a six batting at number nine after the Jamaicans had Barbados reeling at 79-5 in the 26th over at one point.
Captain Nathan Sealy also provided some important runs with 29 against 3-61 off 19 overs from Tamarie Redwood and identical figures of 2-39 off 10 overs, each, from Jevone Wynter and Michael Clarke.
Jamaica, in their reply, reached 72-2 off 24 overs at stumps on day one, trailing by 128 runs with Steven Wedderburn and Matthew Morgan at the crease on 39* and 28*, respectively.
The first over of day two saw Wedderburn fall without adding to his overnight score and that signaled the beginning of the end for the Jamaicans.
The wickets of Morgan (33), Trevaun Williams (2) and captain Brian Barnes (16) followed soon after as they eventually reached 127-8 off 43 overs before declaring to try and force a result out of the game.
Off-spinner Saurav Worrell was the pick of the Barbadian bowlers with 3-24 from his 10 overs while Jatario Prescod also took three wickets.
Barbados then batted smartly in their second innings, eventually reaching 172-2 in 57 overs before proceedings drew to a close with them as champions.
Openers Kyle Jordan and Joshua Morris made 62 and 52, respectively.
Full Scores:
Barbados U-19s 200-9 declared off 62.4 overs (Raneico Smith 50, Nathan Sealy 29, Tamarie Redwood 3-61, Michael Clarke 2-39, Jevone Wynter 2-39) & 172-2 off 57 overs (Kyle Jordan 62, Joshua Morris 52, Joshua Dorne 29*, Zion Brathwaite 22*)
Jamaica U-19s 128-8 declared off 43 overs(Steven Wedderburn 39, Matthew Morgan 33, Saurav Worrell 3-24, Jatario Prescod 3-51, Raneico Smith 2-16)
Teams will now turn their attention to the CWI Rising Stars Men's 50-Over Championships starting on Tuesday.
Defending champions Jamaica will face Guyana at Arnos Vale. The Leeward Islands will face Trinidad & Tobago at Sion Hill while Barbados takes on the Windward Islands at Park Hill.
The hurricane affected regions including host country St. Vincent and the Grenadines, necessitating a delay and a subsequent alteration in the tournament's format.
The tournament will now begin on July 11 in St. Vincent and the Grenadines. The updated format will feature four rounds of two-day matches and five rounds of 50-over matches.
Despite these modifications, the tournament will still conclude on July 31 as initially planned, ensuring teams have a balance of match time to develop their skills and adequate time for recovery between matches.
Cricket West Indies Director of Cricket, Miles Bascombe, stated, "Following an assessment by our Cricket Department, I am pleased to confirm that the pitches and outfields are in excellent condition. Additionally, electricity and water services have been fully restored at all venues and accommodation facilities."
The Barbados, Leeward Islands, Jamaica, and Guyana teams are scheduled to arrive today Monday, July 8. The Trinidad and Tobago team will arrive on Wednesday, July 10. The Windward Islands team is already present in St. Vincent.
Bascombe also commended all stakeholders for their effort in reorganizing and readying the tournament under challenging circumstances. "I want to extend my gratitude to everyone involved in the quick and efficient reorganization of the championship. Your dedication has ensured we can proceed as planned. I also commend the players for their patience and understanding during this period.” Bascombe said.
After starting the day 4-0 in their second innings, Jamaica were dismissed for just 87 in 31.4 overs, meaning Barbados would need 199 in just over two sessions to win.
Steven Wedderburn made 39 for Jamaica as Saurav Worrell took 4-14 from six overs and Renecio Smith grabbed 3-11 from seven overs for Barbados.
Then, despite starts from Joshua Dorne (34), Zion Brathwaite (28), Nimar Bolden (23) and Captain Nathan Sealy (23), Barbados were bowled out for 142 in 61.2 overs with just 10 balls left in the match.
Tamarie Redwood took 4-47 off 18 overs while Reon Edwards took 3-31 off 10.2 overs.
Jamaica have now successfully completed the Regional Under-19 double after winning the 50-over title earlier in July.
Final Scores: Jamaica U19s 269 off 108.4 overs (Jordan Johnson 120, Brian Barnes 61, Nathan Sealy 5-64) and 87 off 31.4 overs (Steven Wedderburn 39, Saurav Worrell 4-14, Renecio Smith 3-11) Barbados U19s 158 off 56.1 overs (Nimar Bolden 37, Nathan Sealy 24, Deshawn James 5-21, Tamarie Redwood 3-56) and 142 off 61.2 overs(Joshua Dorne 34, Zion Brathwaite 28, Tamarie Redwood 4-47, Reon Edwards 3-31)
Jamaica secured their third win in as many games with a six-wicket win over the Leeward Islands via the Duckworth-Lewis-Stern method at Sion Hill.
The match was initially reduced to 41 overs per-side after a rain delay at the start. The Leewards were reduced to 157 all out off 40.3 overs batting first.
Michael Greaves top-scored for the Leewards with 60 while Carlon Bowen-Tuckett added 26 against 4-24 off eight overs from Tamarie Redwood and 3-22 off nine overs from Alex Hinds.
Jamaica were cruising at 86-4 off 16 overs during their reply before another rain delay meant their new target was 144 off 33 overs.
Play resumed before, only four overs later, the heavens opened up once again with Jamaica ending up 121-4 off 20 overs. Jordan Johnson led the way with his second consecutive half century, ending 59* off just 52 balls.
Guyana beat Barbados by 54 runs via the Duckworth-Lewis-Stern method at Arnos Vale for their first win.
Guyana batted first and posted 178-9 from their 50 overs thanks to a top-score of 35 from Rampertab Ramnauth. Jonathan Rampersaud (31) and Zachary Jodah (28) also provided good contributions against two wickets, each, from Nathan Sealy, Saurav Worrell and Isaiah Folkes.
Barbados’ reply never really got off the ground. They eventually reached 104-8 off 27.2 overs before rain prevented any further play.
Rampersaud took 3-20 off six overs and was well supported by Isai Thorne who claimed 2-25 from 6.2 overs.
The match between Trinidad & Tobago and the Windward Islands at the Cumberland Playing Field ended in a no result.
The Windwards were cruising at 62-1 off 9.2 overs before rain prevented any further play.
Earlier, they bowled T&T out for 124 in just 24.4 overs. Kerwin Gassie led the way with 4-32 from 4.4 overs.