Giants Sign Santiago Casilla By Tim Dierkes | January 20, 2010 at 10:40pm CST The Giants signed reliever Santiago Casilla to a minor league deal, reports Baseball America's Matt Eddy. He'd been released by the A's on December 10th to make room for Rule 5 pick Bobby Cassevah. Casilla, 29, posted a 5.96 ERA, 6.5 K/9, and 4.7 BB/9 in 48.3 relief innings last year. He was hindered by calf and knee injuries. He dealt with a sore elbow throughout the '08 season.