As part of our registration process, we require parents to be logged in and have their player set up as a "Person" in the system. This seems to work really well so that we don't have to ask the same questions about the player's name, birthdate, etc every season. It also eliminates mistakes by having a single source of truth for parents and players.
However I have been unable to figure out how to access that data within the registration reports. There is clearly the "Entry" column that I can click on, which sends me to the detail for that individual registration. It shows the "SportsEngine Account" (parent name) and "Entry Filled out for (player name), and you can click on either of those to get to the individual person's profile page. This is helpful if researching one individual registration record, but I cannot figure out how to access the Entry and Person fields to include that info in bulk on the report.
There is also a "Player Profile" checkbox within the "Extra Data" section of the report builder, however all that does is add a column that shows a clickable "Player Profile" link for each registration. Clicking that changes the text to "No Players Found".