Casilla notched his 12th save with a scoreless ninth inning in the Giants' 4-1 win over Colorado on Thursday afternoon. He walked one in the outing. Earlier San Francisco announced that Casilla (12 saves, 1.68 ERA) and Sergio Romo would share closing duties the rest of the way, but Romo pitched a scoreless eighth inning before Casilla came on to finish it off. Expect Romo to get an opportunity some time soon, but Casilla could still be the better bet if he stays out of trouble over his next few outings.