Buster Posey hit a go-ahead home run in the fifth and Madison Bumgarner struck out 12 as the Giants beat the Cubs 5-3 on Thursday night.
After completing a four-game sweep of the Red Sox, the Angels will carry a two-game lead over the A's into their weekend series in Oakland.
After being a last-minute scratch on Wednesday, star point guard Derrick Rose vowed to play in Team USA's game vs. Puerto Rico on Friday.
The Angels will continue their playoff push without their ace Garrett Richards, who tore his left patella tendon on Wednesday night.
Major League Baseball granted the Giants an opportunity to win the suspended game, but Cubs closer Hector Rondon got in the way.
After rain delayed the resumption of the suspended game, the Giants could only manage to push across one run, losing 2-1 to Cubs.