CREATE TABLE table_name_58 (dob VARCHAR(255), first VARCHAR(255), position VARCHAR(255), bats VARCHAR(255), throws VARCHAR(255))
Which DOB has Bats of r, and Throws of r, and a Position of rhp, and a First of john?
    
SQL: SELECT dob FROM table_name_58 WHERE bats = "r" AND throws = "r" AND position = "rhp" AND first = "john"