Ramnaresh Sarwan hit a career-best 70 but it was not enough for Guyana as they ended a winless Champions League Twenty20 campaign with a 15-run defeat to South Australia.

Skipper Sarwan finally brought some fight to Guyana's ranks but he lacked enough support as his side fell short of the Redbacks' 191 for six.

Callum Ferguson (55) was the mainstay for the Australian side's innings, receiving good support from Cameron Borgas (48) to help set what proved to be a match-winning total for the already qualified Redbacks.

They were dealt an early blow, though, when Daniel Harris (five) played on from Paul Wintz (two for 11).

Michael Klinger and Graham Manou looked to be leading a recovery until both then fell in quick succession for 15.

But a half-century partnership from Borgas and Ferguson put their side back on track as they reached 100 in the 14th over.

They put on 88 together before the stand was broken when the former was cleaned up by Assad Fudadin.

Ferguson continued to look sharp, raising his 50 from 33 balls, before falling, but Daniel Christian (23) and Tom Cooper (13) ensured there was a flourish at the end.

Despite the loss of Travis Dowlin (two) in the second over, Richard Ramdeen gave the West Indians an encouraging start with a quickfire 35, before he perished.

Sarwan and Steven Jacobs (32) kept the momentum going with a 33-ball 56 partnership that took the score to 108 after 13.

But the loss of Jacobs, followed by that of Christopher Barnwell in the space of five balls spelt the end for Guyana.

Their skipper tried his best to keep them in the hunt with his personal best effort coming from 46 balls before he was out as his sided ended the tournament winless from four games.