Just to make you aware, the Wednesday Open Gyms at Marysville are by invitation only. The Coaches will let your son know if he is invited to go or not. These open gyms are sometimes varsity only and sometime JV are included. The entry on the calendar is a place holder and you may have received an invite from the website, but that is not an official invitation.
If a 4 player workout is on the schedule, this is by invitation only as well. The coaches will contact the players to schedule when they should come for the workouts. The coaches may only work with 4 or less players at a time during this point of the off season, so please ask your son when he is scheduled. Please do not hesitate to contact the coaches or myself if you have any questions.