ar_id	int	5	not_null?primary_key?auto_increment
rr_id	int	5	not_null
rr_r_id	int	5	not_null?unsigned
rr_p_own	int	5	not_null?unsigned
rr_p_opponent	int	5	not_null?unsigned
rr_order	int	5	not_null?unsigned
