Alfred Collins tore his patellar tendon during practice in Australia, leaving the San Francisco 49ers thin on the defensive line before facing the Rams.
https://www.foxnews.com/outkick-sports/injury-bug-bites-49ers-loses-key-defensive-tackle-practice-australia
https://www.foxnews.com/outkick-sports/injury-bug-bites-49ers-loses-key-defensive-tackle-practice-australia