You can check your match settings from the game in question by using the following link and replace the matchid numbers (XXXXXX) in the end with your match ID.

http://www.grid-iron.org/index.php?page=club&subpage=makeorders&match_id=XXXXXX

If the players are on the line-up then it is a bug and should be posted in the bug area.

Are your formation legal?

1. FORMATION SUBMIT DEADLINE
Your formation for the match must be send (submitted) at least one (1) hour before the kickoff. If the formation is not send on time or if it is illegal, your team will play with the so called "bot formation".

1.1. LEGAL OFFENSIVE FORMATION
Offensive formation is seen as "legal" when:
a) It has all 11 players assigned
b) Has exactly 1 quarterback
c) Has at least 7 men on the line of scrimmage
d) Has exactly 1 center and at least 2 players that are assigned a position of either guard or tackle
e) Does not have more than 1 guard (for each side), tackle (for each side), tight end (for each side), halfback (for each available position) and fullback (for each available position). To explain: You can have 3 halfbacks if they are halfback (right), halback (center) and halfback (left). However, you cannot have 2 or 3 halfbacks (center)
f) Does not have more than 2 wide receivers (for each side)
g) Has at least 1 running back of any type and on any position

1.2. LEGAL DEFENSIVE FORMATION
Defensive formation is seen as "legal" when:
a) It has all 11 players assigned
b) Has at least 2 men on the line of scrimmage
c) Does not have more than 1 nose tackle, tackle (for each side), end (for each side), outside linebacker (for each side), strong safety (for each available position) and free safety (for each available position).
d) Does not have more than 4 middle linebackers
e) Does not have more than 2 cornerbacks (for each side)

1.3. BOT FORMATION
Bot formation is a formation assigned by computer (Basic I for offensive and 4-3 for defensive formation), that has totaly random players chosen for different positions. In addition, players are considered to be "confused" when playing in bot formation, so they only play at 75% of their ability (overall and individual skills).