Whats the point? Of course concentrating solely on Lacrosse will certainly make you a better lacrosse player but not necessarily a better athlete. Does your inherient athleticism make you a better athlete in any sport? Absolutely. According to statistics most of these kids will not be playing lacrosse at the advanced level even though according to posters on this board every kid is getting a scholarship. Even so, "Lacrosse Player" is not a profession and Playing D1 sports becomes a full time commitment. Playing multiple sports may make your kid a better athlete if not a more well rounded person. And that may be more important. It may result in them not burning out from one sport. Let them choose to play the sports they want. Let them enjoy this time. Its too short and life will have them consumed soon enough. Parental expectations are not the kids problem. Help them build memories, they last longer.