[mikesears]

What everyone is trying to say is that if you come out with the following formation:

87------------50--60--70--61--51--84
-----------------------07-------------------- 86
-----------------------23------35


The ends are #87, and #84. They are eligible by number and position.

The backs, #07, #23, #35, and #86 are all eligible by number and position.


If you run something like this:


87-------84---------50--60--70--61--51--86
-----89----------------------07----------------------82


#84 would be ineligible because he is not on the end of the line. Only 87 and 86 are on the end of the line.

89, 07, and 82 would be eligible because they are backs.