LB (ankle/thigh) missed his second straight practice, but hasn't been ruled out. Former 49ers kicker was working out at the team's facility this week in preparation for the Nextel Catch for Cash promotion. If a fan catches a kick from Wersching at halftime of the Dec. 7 game against Arizona, the fan wins $49,000.Notes: The 49ers signed fourthround draft pick WR Quinton Patton to a fouryear contract. The team also claimed tight end/long snapper Kyle Nelson off of waivers from the San Diego Chargers and waived P Anthony Santella.

Max Albert Hietala at Sahlgrenska University Hospital in Gothenburg, Sweden, and his colleagues examined the cerebrospinal fluid of 14 amateur boxers. Levels of neurofilament light (NFL), a marker for neuronal damage, were four times as high in boxers after a fight as in healthy nonathletes, and up to eight times as high in boxers who had taken more than 15 highimpact hits to the head. Levels took three months to return to normal, they told a meetin