Guyana have made it four first-class titles in a row in Caribbean cricket with room to spare this year.
Captain Leon Johnson hailed the achievement of his team, who have emulated the success managed by Barbados in the late 1970s and Jamaica between 2008-09 and 2011-12.
"We are only the third team to have achieved something like this in Windies first-class history," Johnson said.
"It is very pleasing to be part of it and to be at the helm for the fourth consecutive year of us winning this title. It is testament to our hard work. We have won it with two matches remaining, which is a feat in itself - and we want to play unbeaten this season.
"Winning this title will mean a lot to the people of Guyana - many of whom have supported us throughout. We have worked hard leading up to this tournament, but it is not just the senior team. Our junior teams have been consistently winning and I think it is just testament of the hard work that the players have put in to being successful.
"The weather has not always cooperated and allowed us to prepare as well as we would have liked, but we have always found a way to make do with what time and facilities are available, and so this means a lot to us to be able to remain this consistent over such a long period."
The Caribbean's one-day competition - which will feature both Kent and Hampshire this year - begins at the end of the month.
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