3 kids out of an 18 player roster (not 10). I cannot speak to the difference between when kids enter grades in different states. Maybe the teams will meet again at tournament where US Lacrosse birthdate rules apply and govern the rosters. If it's the Dicks Tourney of Champions in FL, all of the RSL kids will make the U13 cut-off because the Dicks rules are Aug 1. There's also a big difference in size between kids in 6-8th grades when puberty sets in. 91 has a big right attack that is one of the biggest kids on the 91 squad. He may be maturing ahead of his teammates. I watched the RSL kids play an 8th grade team in PA last month. The 8th grade team made the 2019 RSL team look small. Nearly all of the poles on the 8th grade team were 6'0" tall or taller. It was a battle. Final score was 8-7 RSL. Came down to the last two minutes. Age makes a difference in middle school.