The San Francisco Giants' ballpark will have a new name beginning Thursday.

The Giants will announce a 20-year naming-rights deal with Oracle. San Francisco's ballpark has been known as AT&T Park since 2006.

"It's an iconic park, and we kind of view it as a landmark," Larry Baer said. "We said early on we want this park to age gracefully to the point we can feel like what Fenway might feel like in Boston, and Wrigley might feel in Chicago."

The change to Oracle Park will be immediate, with temporary signs going up Thursday.

The deal is reportedly worth more than $200 million.