Jeff Baker singled with the bases loaded in the bottom of the 10th, as the Chicago Cubs downed the Houston Astros 5-4 to record their first three-game win streak and sweep of the season on Sunday at Wrigley Field. Marlon Byrd scored the winning run after leading off with a high fly ball to right, which Hunter Pence lost in the sun, allowing Byrd to reach with a triple. John Grabow worked a scoreless top of the 10th to register the victory. The Northsiders are off today. They head to Miller Park to kick off a three-game series against the Milwaukee Brewers starting tomorrow night.