CREATE TABLE table_2151643_3 (opponents VARCHAR2, surface VARCHAR2, outcome VARCHAR2, partner VARCHAR2)

What was the total number of matches that had an outcome of Winner, a partner of John Lloyd, and a clay surface?
SELECT COUNT(opponents) FROM table_2151643_3 WHERE outcome = "Winner" AND partner = "John Lloyd" AND surface = "Clay"
SELECT COUNT("opponents") FROM "table_2151643_3" WHERE "Clay" = "surface" AND "John Lloyd" = "partner" AND "Winner" = "outcome"