ANY Player Age. Senior American Legion Baseball competition in 2026 is open only to players born on or after Jan. 1, 2007.Jan. 1 is the universal cut-off date observed by the U.S. Olympic Committee. The American Legion will observe a Jan. 1 cut-off date. If a player was bornin 2006 that player is not eligible for Senior American Legion Baseball. A player born in 2007 or 2008 is not eligible for Junior American Legion Baseball. Players born in 2014 or later are not eligible to play American Legion Baseball.