Starcraft 2 tournaments info page:

Interested in running Starcraft II beta tournaments? Please send an email with the following information about your tournament to sc-tourneyinfo@blizzard.com.
• Name of the tournament
• Name of the person operating the tournament
• Name of the organization running the tournament
• Contact information
• Mailing address
• Times and dates of your tournament
• Participating country(ies)
• List of tournament sponsors and partners

We will review and evaluate your request.

Thank you,
Blizzard eSports Team