Question: What was the surface for events held in 1983?
SQL: SELECT "Surface" FROM "1-2151643-3" WHERE "Year" = 1983.0;

Question: What was the total number of matches that had an outcome of Winner, a partner of John Lloyd, and a Clay surface?
SQL: SELECT COUNT("Opponents") FROM "1-2151643-3" WHERE "Outcome" = 'Winner' AND "Partner" = 'John Lloyd' AND "Surface" = 'Clay';

Question: Who were the opponents that led to an outcome of Winner on a Grass surface?
SQL: SELECT "Opponents" FROM "1-2151643-3" WHERE "Outcome" = 'Winner' AND "Surface" = 'Grass';