They are posted in the form of a news item and drop to the bottom sometimes even if the event didn't take place yet like for example the Blizzard tournament.
AJ should have a calendar that obviously stays at the top displaying PvP events that are going to be streamed. This will also boost the viewers, a lot and even make WoW PvP more popular.
Additionally AJ members with a certain rating should be able to put events on the calendar enabling good players to set Arena events up.
It should look something like this:
Edited by Hyrmine, 15 November 2012 - 02:01 PM.