CREATE TABLE table_62270 ("Date" CLOB, "Tournament" CLOB, "Round" CLOB, "Ground" CLOB, "Opponent" CLOB, "Score 1" CLOB)

Which round was played on 10 May?
SELECT "Round" FROM table_62270 WHERE "Date" = '10 may'
SELECT "Round" FROM "table_62270" WHERE "Date" = '10 may'