Zakelj (upper body) exited San Francisco's practice Wednesday, Jennifer Lee Chan of NBC Sports Bay Area reports.
Willis (concussion) didn't participate in San Francisco's training camp Wednesday, Cam Inman of The San Jose Mercury News reports.
VanSumeren (knee) participated in Buffalo's training camp Wednesday, Matt Parrino of Syracuse.com reports.
The 49ers signed Okoronko on Wednesday, Jeremy Fowler of ESPN reports.
Okuayinonu suffered an apparent ankle injury during the 49ers' training camp practice Wednesday, Matt Barrows of The Athletic reports.
Juszczyk (finger) did not participate in Wednesday's training-camp session, Cam Inman of The San Jose Mercury News reports.
Greenlaw (undisclosed) did not participate in Wednesday's training camp session, Cam Inman of The San Jose Mercury News reports.
Cowing (hip) did not participate in Wednesday's training camp session, Cam Inman of The San Jose Mercury News reports.
Odighizuwa (undisclosed) did not participate at the 49ers' training camp practice Wednesday, Nick Wagoner of ESPN.com reports.
Juszczyk (finger) did not participate in Wednesday's training camp session, Cam Inman of The San Jose Mercury News reports.
