The San Francisco 49ers and New Orleans Saints have mutually decided to cancel their joint practices scheduled for this week in Irvine due to a high number of injuries on the 49ers' roster. The decision follows the 49ers' preseason game against the Tennessee Titans, during which cornerback Ambry Thomas broke his forearm, adding to the 23 players already unable to practice. Both teams will now practice independently before their preseason game on Sunday. Despite the setback, 49ers coach Kyle Shanahan expressed disappointment as he values joint practices for better team assessment. Running back Christian McCaffrey provided a positive update on his calf injury, indicating he would be ready for Week 1.