You may have been disconnected from your tournament.
I guess Sega misjudged this a little =p.SERVER MAINTENANCE
Sonic Team will be performing server updates to the US servers in order to prepare for the addition of Battle Servers. The scheduled window is:
Monday, March 8th 21:00 - 24:00 (PST). There is no downtime anticipated, but there may be fluctuations in server performance during this time. We apologize for the inconvenience and hope you enjoy the new Battle Servers