THOUSAND OAKS, Calif.—On the same day the Los Angeles Rams added a playmaking receiver, they lost a cornerstone of their NFL-best passing offense. And they’ve only got two days to figure out how to overcome this upheaval in their next game. Receiver Robert Woods is out for the season after tearing a knee ligament in practice, coach Sean McVay confirmed Saturday. “You’re sick for Robert,” McVay said. “He’s epitomized everything that’s been right about this place. Such a great competitor. Such a tough competitor. It’s so unfortunate.” McVay said Woods’s noncontact injury occurred when he “put his foot in the ground kind of weird” Friday. Woods felt well enough to finish practice, but a scan revealed a torn ACL—the first significant injury of Woods’s nine-year NFL career. Earlier Friday, Odell Beckham Jr. reported to the Rams’ training complex and signed his contract after Los Angeles landed him as a free …