This recommendation adds nine or ten new numbers for each team and gives players, coaches and refs more latitude to respectively select, identify and monitor jersey numbers on game day. It just makes sense ...
00 01 02 03 04 05 06 07 08 09
01 and 02 are as different and identifiable from 1 and 2 as they are from 10 and 20 and will reduce the confusion and requirement for jersey number changes on special teams' kicking and punting plays.