Even against his hometown team's third-stringers and scrubs, Alex Smith demonstrated why he's no longer the San Francisco 49ers' starting quarterback. Smith passed for 146 yards but also threw two terrible interceptions, and San Diego's Eldra Buckley made a one-armed diving catch on a 2-yard touchdown pass with 29 seconds left in the Chargers' 20-17 exhibition victory over the 49ers on Friday...