The decision has been made. San Fransisco's own AT&T baseball park will be holding the semi-finals and finals in the 2013 WBC.
What is the WBC? According to the official site of WBC,
"The World Baseball Classic is an unprecedented baseball event that will feature many of the best players in the world competing for their home countries and territories for the first time ever. This tournament will give fans around the world a chance to see baseball in an exciting and compelling new format."