The Giants have placed 28-year old switch hitting IF/OF Eugenio Velez on the 15-day disabled list with a concussion. He was hit in the head the other day while on the bench by a line drive off the bat of Pat Burrell. Velez has played in 21 games for the Giants this year and he is 9 of 46 (.196 avg, .644 OPS) with 7 runs scored, 2 homers and 8 RBIs. The Giants have called up 26-year old righty swinging infielder Ryan Rohlinger to replace Velez on the active roster. Rohlinger has played in 10 games for the Giants this year and he is 3 of 14 (.214 avg, .527 OPS) with 1 run scored and 1 RBI.