All current US Lacrosse members who meet the age requirements are eligible to participate. Players may not be 15 years of age on or before December 31, 2010 to be eligible for the 2011 US Lacrosse U15 National Championship or the Regional Championships. Accordingly, players that turn 15 after December 31, 2010 are eligible. (To participate, players must turn 15 years or younger in the 2011 competition year. If a player turns 16 in 2011, he/she is not eligible).