CREATE TABLE table_55639 ("Player" TEXT, "Position" TEXT, "Date of Birth  ( Age ) " TEXT, "Caps" FLOAT, "Club/province" TEXT)

What is the high cap total for a lock with the vicenza rangers?
SELECT MAX("Caps") FROM table_55639 WHERE "Position" = 'lock' AND "Club/province" = 'vicenza rangers'
SELECT MAX("Caps") FROM "table_55639" WHERE "Club/province" = 'vicenza rangers' AND "Position" = 'lock'