Tyler Chatwood gets the calls for the Rockies in this one and he has been a Giant killer. Chatwood has been strong in his last 70.67 innings against the San Francisco Giants posting a 6-1 record with a 3.68 ERA. The big left-hander Ty Blach will take the hill for the San Francisco Giants. Blach has a 8-11 record and a 4.68 ERA with 70 strikeouts. The San Francisco Giants are 31-40 when playing a team with a winning record. They are 21-37 on the road this season. Take the Colorado Rockies here on Tuesday night.