These are chat archives for arenanet/api-cdi
Starting this Friday at reset, WvW will begin doing 1 up / 1 down matchmaking. This means a single, third-placing world will move down one tier and a single, first-placing world will move up one tier. If there is a tie for last, no world moves down, which also means no world in the tier below can move up (as there’s no room). Similarly, if there is a tie for first, no world moves up, which prevents the next tier up’s last-place world from moving down. If there is a change in which worlds are being used for matchmaking purposes (such as when world links change), matchmaking falls back on the usual Glicko rating sort (plus a potential deviation-based shuffle). Even while 1 up / 1 down is active, Glicko data will continue to be updated as it has been when each week’s round ends. This way it is always current when it needs to be relied upon.
fair, glicko is used for a short period after relinks