DOREEN O'Conner and Loretta Kotoisuva will defend the Down Under Mining Vatukoula Ladies Pairs Championship title this weekend.
The duo confirmed their participation in the two-day event yesterday.
Vatukoula Bowling Club tournament co-ordinator Semesa Lewai said 10 teams had shown interest.
He said they would not extend the deadline for the registrations which ends tomorrow.
"The greens are running faster than the Masters Pairs event that we hosted last month," Lewai said.
"We expected tougher competition this year. This is because the combinations are quite strong.
"With the steady registrations coming in we expect to get a total of 16 teams."
"We have changed the format of this year's competition. There will be no sectional play. It will be on a round-robin basis."
"In case there is a tie at the end then the teams will continue to play a certain number of ends to determine the winner. We will not be utilising the count-back system."
Prizes worth $1200 will be at stake in the tournament.