Guam have been well beaten on their Davis Cup tennis debut in Oman.
The US Territory was outclassed 3-0 by Singapore in their opening tie in Asia/Oceania Zone Group Four.
Christopher Cajigan took the opening singles rubber to three sets before succumbing 3-6 6-4 4-6 to Roy Hobbs.
Former Pacific Oceania representative Daniel Llarenas was edged 7-5 in a crucial first set tie-breaker against Shaheed Alam before dropping the second set 6-2.
Mason Caldwell and Jean Pierre Huynh were then outclassed 6-3 6-2 in the doubles.
Guam's next opponent is Mongolia who had a 2-1 victory against Bahrain.