Perfect Game does a great job in dividing the team rosters in a way that ensures each player will have a full and fair opportunity to be objectively evaluated. Please keep in mind that if your son is a HS SS, it may be in his best interests to also be seen at 3B and 2B in game situations, so do not be surprised if he also plays these positions at the showcase. However, the best advice I can offer is that you call PG's home office and speak with one of their employees. They will be more than happy to answer all of your questions fully and address any concerns that you may have before you sign-up. As a reputable ongoing business, they are very interested in your son having a good experience at one of their showcases.