Contreras shines in Rockies debut, Smith and Gonzalez homer as Rockies improve to 4-1 on this 10-game homestand and stay one game ahead of the Giants in the wild-card race

The Rockies, who blew a four-run lead Saturday, blew a three-run lead as they lost consecutive games for the first time since June 23-24 and saw their steak of four consecutive series wins at home end.