Kuemper stopped 17 shots in Saturday's 6-2 preseason win over the Ducks.
Anaheim took a 2-1 lead late in the first period on a Beckett Sennecke power-play tally, but Kuemper shut the door from there as Los Angeles took control. The 36-year-old netminder is coming off a disappointing campaign, going 19-14-15 in 50 appearances with a 2.78 GAA and .891 save percentage, and Kuemper could cede more work to backup Anton Forsberg this season if he can't regain his prior form.