A "Grandfathered" player is a non-ATC player that participated in the Tournament prior to April 1996, as noted in C.1.b.  There is no limit to the number of Grandfathered players that may be on a team, however, a player must be named on the Grandfather list to be eligible to play in that status.  The Rules Committee will maintain the Grandfather list and may add a player if sufficient data is provided showing that player participating in the tournament prior to April 1996.