Astros update Sunday: Giants 6, Astros 4 (11). Record: 42-85. Today:At Colorado Rockies, 7:40 p.m. Pitchers: Brett Myers (3-12) vs.Jhoulys Chacin (9-10). TV/radio: FSH; 740 AM and 1010 AM (Spanish).In case things like walkoff grand slams and leadoff inside-the-parkhome runs had you starting to wonder, no, there is no magicassociated with the young Astros . Life as a team loaded withrookies is not a fairy tale, no matter how much fans - or in thiscase, players - think it is. The moment was right there for J.D.Martinez, who literally watched it go by, as it was for Carlos Leeand an entire 25-man roster looking to extend its winning streak toa place it hadn't been before.