I think its Ortiz who should try to work here, he is the underdog and he is up against a very skilled, quick with a good generalship he is fighting the kind of boxer that he has not fought in his whole career, Loma has fought fighters like or better than Ortiz in the past, he has an injury when he fought Lopez, that is why he lost the fight, if we will see a healthy Loma we can see similar fights like the Commey fight, a healthy Loma can beat any great boxer.
Indeed this will be a huge test for Ortiz since some reply here stated that Ortiz hasn't fought any decent fighter yet, let alone Loma who is a very skilled one. Ortiz should prepare and study Loma closely in order for him to at least match the pace of Loma if not outpaces him. We may think that this is the same as a walk in the park for Loma but we can't tell if that will be the case since I think Ortiz will be fully prepared for this fight. I am sure no boxer wanted his career to be blemished.