In preparation for the tournament tests at 4pm today, we are updating the tournament server with a fix that we believe will help with the issues we have been seeing.
This update will not require the servers to come offline, but tournaments will be locked for one hour starting at 2 PM PT (Worldclock). Occasionally, while giving our servers a once over, we discover the odd Dreadling or two. Maintenance might last a little longer as a result.
Thank you for your patience and understanding!