FILE - This Oct. 1, 2010, file photo shows San Diego Padres' Adrian Gonzalez hitting a three-run homer off San Francisco Giants starting pitcher Matt Cain during the third inning of their baseball game in San Francisco. At left is San Francisco Giants catcher Buster Posey. Gonzalez has flown to Boston to take a physical exam needed to complete a trade from the San Diego Padres to the Red Sox, a person familiar with the situation told The Associated Press on Saturday, Dec. 4, 2010. (AP Photo/Eric Risberg, FILE)