CREATE TABLE table_204_721 (id NUMBER, "rank" NUMBER, "wrestler" CLOB, "no. of reigns" NUMBER, "combined\ defenses" NUMBER, "combined\ days" NUMBER)

which wrestler comes after paul london
SELECT "wrestler" FROM table_204_721 WHERE "rank" = (SELECT "rank" FROM table_204_721 WHERE "wrestler" = 'paul london') + 1
SELECT "wrestler" FROM "table_204_721" WHERE "rank" = (SELECT "rank" FROM "table_204_721" WHERE "wrestler" = 'paul london') + 1