If a player is on your tournament roster for Eastern National Championship but is unable to attend, are they still eligible to play in Worlds?

The rule as I understand it, providing a player is rostered, signed in and played for your team in a tournament considered to be a "qualifier" and he is a regular player (this is key), he would be eligible to play Worlds. If uncertain, call Sacramento for the answer. Below are the applicable rules National play, Page #21 of the rule book.

PLAYING RULES 21
4.2(2) • ADDING / RELEASING ROSTER PLAYERS
When a team qualifies for advancement to the World Championships, that
team's roster is frozen, and additions or substitutions for players already on the
roster may only be made pursuant to this section.
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Players may be added to qualified rosters for the Eastern or Western Nationals,
the World Championships or the Tournament of Champions under the following
conditions:
1. The team has qualified.
2. Players to be added must be otherwise eligible as to age, residency
and rating experience history for the team they seek to join.
3. Players added must not exceed the maximum allowable roster limit.
All players listed on the official roster (excluding “roster exemption
players”) must have been present and played at the qualifier.
4. Players to be added must secure a player release if they are on
another qualified team roster in that age division. (See §4.2(2) E.)
5. The number of players that may be added is limited by the number of
players already on a roster. If a qualified team has at least 15 (or 16
or 17, depending on the number of defensive players normally used)
from the original qualifying roster, that team is prohibited from adding
“roster exemption players,” except as allowed by §4.2(2) B.
A. Teams adding “roster exemption players,” and that normally play with ten
defensive players, will have a 15-player roster limit. Teams that normally
play with 11 or 12 defensive players (age 70+ and older men’s teams and
senior women’s teams) will have a roster limit of 16 or 17 players.
B. Teams may request to add players who are regular members of the team,
but were not able to attend the qualifying tournament. The roster
restrictions do not apply to regular team members.
C. If a qualified team's roster falls below 12/13/14 players, the team may apply
to add players until it reaches the 12/13/14 player level. Those players may
be from the same age group in the same or lesser skill level, or equivalent.
D. If an invited team's roster falls below the 15/16/17 limit, the team may apply
to add players until it reaches the 15/16/17 player level. The players must
be from the next older age group in the same or lesser skill level, or
equivalent.
NOTE: For §4.2(2) B-D, managers must apply to SSUSA in writing for
approval of those players. Player additions will be approved or denied on
an individual basis.