Jamaica suffered a 28-12 defeat by Cumbria in Workington in a disappointing build-up to their first World Cup.
Second rower AJ Wallace gave the Reggae Warriors the lead with an early try which was cancelled out by Whitehaven-born prop Kyle Amor.
Ryan Johnston added a second try for the home side, who added further tries without reply in the second half through Curtis Teare, Tee Ritson and Jake Carter.
Cumbria: Cresswell, Ritson, B Carter, Teare, Bulman; J Carter, Johnson, B Singleton, Doran, Amor, P Singleton, Gillam, Scholey. Subs: Saunders, McNally, Thomson, McAvoy, Broadbent.
Jamaica: Simpson; Agoro, Johnson, Ogden, Young; Woodburn-Hall, Rush; Lawrence, Golding, Andrade, Wallace, Tomlinson, Brown. Subs: Ho, Thompson, McKain, Baily, McDonald, A Jones-Bishop, Wade.
Jamaica are in a group alongside New Zealand, Ireland and Lebanon at the tournament.