Chelsea Edghill (File photo)
The double for the Cubans over Guyana was completed as Britton lost 1-3 (2-11, 11-7, 10-12, 4-11) to Adrian Perez, which was followed by Johnson going down 11-8, 7-11,8-11, 2-11 to Livan Martinez.
Rene Mendez swept Alleyne 3-0 (11-7, 11-6, 11-3).
The men finished second in their group, having secured a 3-1 win over Aruba and a 0-3 loss to Puerto Rico.
The women defeated Barbados 3-0 and also suffered a 0-3 loss to the Puerto Ricans.
Attention now turns to the singles segment.