By Jon Wertheim In our latest mailbag, we look at the place of tennis superstars in the larger sporting landscape and get into the rumors about a potential Ash Barty retirement. Hey everyone… Quick notes: • If you haven’t read Steve Simon on Peng Shuai, here it is: • Here’s what players were told about Indian Wells requirements: Entry requirements: All travelers must present a certificate of full vaccination from a CDC approved vaccine and a negative Covid test (taken 1 day prior to departure) or documentation of recovery from Covid-19. Click here for complete CDC guidelines. Testing Procedure…