Banned Bat Application (Again)

Question
Hello-

I need some bat legality clarification. By ASA rules, when an umpire is checking bats before a game, he is looking for the 2000 or 2004 certification mark. If he does not see this mark, is the bat automatically declared illegal? Are any bats without that mark allowed at all? Once he finds one of the marks, the ump needs to check to make sure the bat isn't on the list of bats that bear the mark and aren't allowed. Do all bats on the "non-allowed" list carry the 2000 or 2004 mark? Why do bats on this non-allowed list carry the certification mark? Will new bats be added to that non-allowed list or is the list complete?

Answer
Hi Dave,

here's the rule...
the bat must bear either the ASA approved 2000 certification mark or the ASA 2004 certification mark as shown below, and must not be listed on an ASA non approved list,

and must be included on a list of approved bat models published by the ASA National Office; or

no mark, must, in the sole opinion and discretion of the umpire, have been manufactured prior to 2000 and if tested, would comply with the ASA bat performance standards then in effect.

If no mark, it must be made prior to 2000 otherwise not even a 2nd look, non-approved for ASA play.

only bats with the mark are listed on the ASA non-approved website, there are 24 of them, no need to list bats w/out the mark
they once were legal at 1st testing but after break in were found not to comply

last question, I have no idea but the last hasn't been growing in the past few years.

mark