By Jon Wertheim Also in this week’s mailbag: inquiring about Rajeev Ram’s Davis Cup snub and the lodging situations of tennis pros. Hey everyone, • The WTA Finals are underway. Let us note that it has been a year (to the day) since Peng Shuai issued her social media post. One still wonders about her well-being. Among other concerning parts of this fact pattern, you’ll note her light footprint since. This was a player known for outspoken demeanor; you can scarcely find her on social media or in public now. The WTA, rightly, demanded an investigation. China all but laughed at the request. And no…