Brock and Brown, who qualified third in Thursday’s opening round, scored 61.69% in the first final session and followed up with a 63.92% performance in the second to win by almost four boards.
In second were Doris Greenwald and Terry Lubman of Connecticut.
Brock is a five-time women’s world champion: She has won two Venice Cup titles, two women’s Olympiad titles and one McConnell Cup. She has multiple women’s European and English titles to her name.
Brown has won one women’s Olympiad, and she has two women’s European championship wins.