CREATE TABLE table_63654 ("Round" TEXT, "Clubs remaining" FLOAT, "Clubs involved" FLOAT, "Winners from previous round" TEXT, "New entries this round" TEXT, "Leagues entering at this round" TEXT)

Which round has 4 clubs involved?
SELECT "Round" FROM table_63654 WHERE "Clubs involved" = '4'
SELECT "Round" FROM "table_63654" WHERE "Clubs involved" = '4'