CREATE TABLE table_204_520 (id NUMBER, "outcome" CLOB, "no." NUMBER, "date" NUMBER, "championship" CLOB, "surface" CLOB, "opponent" CLOB, "score" CLOB)

how many games did this person play against jimmy connors ?
SELECT COUNT(*) FROM table_204_520 WHERE "opponent" = 'jimmy connors'
SELECT COUNT(*) FROM "table_204_520" WHERE "opponent" = 'jimmy connors'