SANTA CLARA — U2’s “Sunday Bloody Sunday” blared during warmups on the 49ers’ fields, and consider it a relative harbinger of the injury-laden practice that ensued Sunday, overshadowing a collection of defensive gems.
Wide receiver Brandon Aiyuk, defensive end Dee Ford and guard Ross Reynolds exited with injuries, while defensive end Nick Bosa was held out of a second consecutive day without a specified injury.
Aiyuk, a first-round pick who’s had a highly impressive camp, appeared to strain his left hamstring on a deep route. He stewed silently on the sideline for the final 30 minutes of practice, with teammates and trainers occasionally checking on him.