Chicago Cubs miss prime opportunity to gain ground in division race. 3 takeaways from sweep in San Francisco.

SAN FRANCISCO — Riding a three-game sweep into the second leg of a three-city trip, the Chicago Cubs positioned themselves to put pressure on the Milwaukee Brewers heading into the final four weeks of the regular season. They couldn't build off their success in Anaheim, Calif., however, during their series against the San Francisco Giants, who handed them a 4-3 walk-off loss Thursday at Oracle ...