The Giants have purchased the contract of 2008 first-round pick Buster Posey, who will be in Philadelphia for tonight's game, GM Brian Sabean told the San Francisco Chronicle. The move is prompted by Bengie Molina's lingering quadriceps strain. Posey had a terrific minor-league season. He batted .326 in 80 games at Class A San Jose and .321 in 35 games at Triple-A Fresno, and combined for 18 homers and 80 RBIs.