49ers general manager John Lynch said that Jerick McKinnon will be out until Week 1 against the Vikings.
Fantasy Impact:
McKinnon suffered a calf injury last weekend, and while it is not considered to be serious, the 49ers are taking no chances with their free-agent acquisition at running back. McKinnon is likely fine, but will be setting career-highs in touches this season. This may not be the last time we see him pop up on the injury report.