CHICAGO (AP) — Uncertainly on the back end of their starting rotation has been a problem for the Chicago Cubs. Dallas Beeler showed he's not the solution. D.J. LeMahieu had three hits and scored twice to help the Colorado Rockies get a win in their first game after trading Troy Tulowitzki, beating the Cubs 7-2 Tuesday night. LeMahieu extended his hitting streak to 18 games with an RBI double as part of a four-run first, tripled in the fifth and singled in the ninth to help Colorado won for the third time in five games. Recalled earlier in the day from Triple-A Iowa, Beeler (0-1) lasted only 1 1/3 innings and allowed four runs and four hits while walking three and striking out one.