Captain Pat Cummins backed inexperienced opener Sam Konstas to deliver on the international stage despite the youngster's struggles against the West Indies as Australia won the first test in Bridgetown by 159 runs on Friday.

Australia ruthlessly completed a 159-run victory over West Indies in the first test on Friday as Nathan Lyon swept up the tail after Josh Hazlewood's five-wicket masterclass broke the hosts' resistance on a pitch that deteriorated into a bowler's paradise.

Australia blew away the West Indies for 141 and won the first Test by 159 runs at Kensington Oval on day three. The West Indies was set a stressful 301 target to win on a tricky pitch and folded in 33.