Updated

Nnamdi Asomugha expects the football to be in the air all the time Sunday, which is about how often he expects to be on the field in his debut with the San Francisco 49ers.

Asomugha was named as San Francisco's No. 3 cornerback this week, and the four-time All-Pro is prepared for extensive action when the 49ers begin the season against the prolific passing attack of the Green Bay Packers.

The 49ers signed the 11th-year veteran earlier this year specifically to help in these kinds of situations. San Francisco finished third in the NFL in total defense last season but the 49ers struggled defending the pass down the stretch and throughout the team's playoff run to the Super Bowl.