The San Francisco Giants' bullpen struggles culminated in a 5-3, 10-inning loss to the Chicago Cubs, highlighted by Ian Happ's decisive two-run homer. Despite a strong effort, including Matt Chapman's ninth home run of the year and Jorge Soler's critical double, the Giants were unable to secure a four-game sweep. Manager Bob Melvin faced criticism for not using closer Camilo Doval, who had pitched in the previous two games, opting instead for Luke Jackson, who allowed Happ's home run. The Cubs' victory, marked by solid pitching from Shota Imanaga and a strong performance from reliever Jordan Hicks, broke their losing streak and showcased the resilience of their lineup. The Giants now face a challenging schedule ahead, beginning with a series against the first-place Dodgers.