Great Britain and Ireland beat Canada 5-2 on Day 3 of the Astor Trophy women's amateur match-play team tournament to join Australia at the top of the table at Grange Golf Club, Adelaide, South Australia.
GB&I and the Aussies have both won twice and their Day 4 match could decide the championship.
New Zealand, who beat the Ladies Golf Union team on Day 1, but lost to Australia on Tuesday, suffered their second defeat. They lost 4-3 to South Africa.
GB&I's unchanged foursomes line-up gave the defending champions a 2-0 lunchtime lead for the second day in a row. However, Canada levelled it at 2-2 overall when they won the top two afternoon singles.
Curtis Cup player Bronte Law suffered her first reverse of the tournament, losing by 2 and 1 to Naomi Ko. Chloe Williams lost the No 2 singles by 4 and 3. Scot Connie Jaffrey turned the tide with a 3 and 1 win over Jaclyn Lee and wins by Charlotte Thomas (5 and 4) and Hayley Davis (2 holes) meant GB and I took the singles 3-2 for a 5-2 overall victory.
DAY THREE RESULTS
GREAT BRITAIN and IRELAND 5, CANADA 2
B Law and C Williams bt N Ko and G St Germain 5 and 4
C Thomas and H Davis bt J Lee and M Kim 5 and 4
Law lost to Ko 2 and 1
Williams lost to St Germain 4 and 3
C Jafffrey bt Lee 3 and 1
Thomas bt Kim 5 and 4
Davis bt Lau 2 holes
NEW ZEALAND 3, SOUTH AFRICA 4
M Keh and J Alvarez lost to B Strauss and I Samu 1 hole
C Cassidy and A Campbell bt M Fletcher and E Galletti 2 holes
M Keh lost to Strauss 1 hole
Alvarez bt Fletcher 5 and 3
Cassidy bt L Assad 6 and 4
W Keh lost to Samu 1 hole
Campbell lost to Galletti 1 hole
HOW THEY STAND
2pt Australia 2 wins from 2 matches
2pt GB and I 2 wins from 3 matches
1pt NZ 1 win from 3 matches
1pt S Africa 1 win from 2 matches
0pt Canada 0 wins from 2 matches
DAY 4 MATCHES
GB and I v Australia
Canada v S Africa