Led by a half century opening partnership Guyana defeated Jamaica to retain the West Indies Cricket Board (WICB) RegionalUnder-19 50-over tournament here on Sunday. Openers Tevin Imlach and Shimron Hetmyer produced a 59-run first wicket partnership to help Guyana beat the hosts by four wickets to lift the 2015 championship trophy. Chasing 246 for victory,
