SAN FRANCISCO — Madison Bumgarner admits at times he wondered whether he would make a complete recovery from injuries sustained in a dirt biking accident.

He looked like his old self against the Chicago Cubs.

Bumgarner allowed four hits over seven innings to win for the second time since returning from the disabled list, helping the San Francisco Giants defeat the Cubs 3-1 Wednesday and complete a winning homestand for only the second time this season.

“Obviously there’s going to be some times when doubt creeps in,” Bumgarner said. “It’s just like anything else, you’ve got to deal with it. You can’t try to push it aside, you can’t try to trick yourself, you just try to deal with it.”

Bumgarner (2-5) struck out seven, walked one and gave up five hits — including a third-inning home run by Albert Almora Jr. Bumgarner is 2-2 with a 2.52 ERA in five starts since returning July 12 after missing nearly three months because of injuries sustained April 20. Since beating Pittsburgh on July 25, he did not get a decision against the Los Angeles Dodgers and lost to Arizona.

The 2014 World Series MVP has a 1.38 ERA in his last four starts and has received two runs or fewer of support in seven of 10 starts this year.