Three-time World Cup champion Jeremy Henry lost his semi-final, while Australia's women's representative Jamie-Lee Worsnop also missed out on the final in the World Cup at Warilla Bowling Club.

The Warilla-based Henry is the only three-time men's champion in the tournament's 11-year history but couldn't extend his run following a tense 7-7, 9-6 loss to St Johns Park's David Holt, who qualified as Australia's second representative by winning the Australian Indoor title.

Worsnop, 18, is the youngest male or female player to win the Australian Indoor qualifying event and represent Australia at the World Cup hosted by Warilla for a 10th straight year.

The St Johns Park bowler was beaten in her semi-final 7-4, 11-5 by Malaysian star Siti Zalina Ahmas who has won all eight of her matches.

"It's my biggest event and I'm pleased to have made the semis," said Worsnop who won five of her seven pool games and then beat South African Colleen Piketh in Tuesday's play-off match.

"It's a pretty amazing quality of players here and I've learnt a lot. It was challenging getting used to the subtle differences rink by rink but I've really enjoyed the week."

Ahmas also beat Worsnop in their sectional match and now takes on Scotland's four-time world indoor champion Julie Forrest in Thursday's women's final.

Meanwhile, Northern Irishman Henry, a five-time world champion, and Englishman Holt - the 2002 Commonwealth Games gold medallist - fought out a terrific men's semi-final.

Both players had their chances to win the first set which was tied 7-7, while the second set was also tight with Holt able to make the key shots at vital stages.

Holt clinched an automatic semi-final spot by winning men's section 1 with an 8-1 win/loss record with his only defeat to New Zealander Ali Forsyth.

The St Johns Park star faces the winner of Thursday morning's semi-final between section 2 winner Iain McLean (Scotland) and Guernsey's Todd Priaulx. McLean, Priaulx and Jeremy Henry all finished with 8-1 records in section 2, with Priaulx beating McLean 4-7, 6-5, 2-1 in their final sectional match.

Meanwhile, Forrest caused a boilover beating New Zealand's four-time champion Jo Edwards in their semi-final.

Forrest came from a set down in a 3-10, 8-7, 5-0 triumph.

Edwards was chasing a fifth World Cup crown and was unbeaten through her eight sectional matches - winning 15 sets and drawing the other set - including beating Forrest in the opening match of the tournament.

Forrest finished third in section 1 behind Edwards and Piketh but advanced to the semis with a straight sets win over Canadian Kelly McKerihelly in a play-off.

Edwards took the first set of the semi-final 10-3, but was out-gunned by Forrest, who won the second set and then the three-end tie-break 5-0.