CREATE TABLE table_51351 ("Player" TEXT, "Span" TEXT, "Start" TEXT, "Tries" TEXT, "Conv" TEXT, "Pens" TEXT, "Drop" TEXT)

on the span of 1992-2000, what was the conv ?
SELECT "Conv" FROM table_51351 WHERE "Span" = '1992-2000'
SELECT "Conv" FROM "table_51351" WHERE "Span" = '1992-2000'