The Rockies have placed 25-year old righty starting pitcher Jhoulys Chacin on the 15-day disabled list due to a lower back strain. He has pitched in 4 games (all starts) for the Rockies so far this year and he is 3-0 with a 1.46 ERA and a 0.89 WHIP. The Rockies have called up 26-year old righty reliever Rob Scahill to replace Chacin on the roster. He pitched in 5 games (0 starts) in AAA-ball for the Rockies so far this year and he was 2-0 with 1 save, a 4.26 ERA and a 1.74 WHIP. Scahill got his first taste of the majors for the Rockies last year and he worked in 6 games (0 starts) in which he was 0-0 with a 1.04 ERA and a 1.15 WHIP. The Rockies hope that Chacin is ready to return soon, as he has been electric for them so far this year.