The MLB All Star Game is taking place in Anaheim on July 13th this year and the festivities have begun! The All Star Fan Fest at the Anaheim Convention Center (across the street from Disneyland) opened it's doors on Friday, July 9 and will be open until July 13th. At Disneyland and Downtown Disney you can find All Star Game Merchandise including merchandise that combines Disney and MLB.
To check out the details on the All Star Game activities, here's the link to the MLB All Star Game site.
MLB All Star Game