San Francisco 49ers tackle Joe Staley, guard Joe Looney, and guard Al Netter work on blocking drills during a NFL Super Bowl XLVII football practice in New Orleans

 
San Francisco 49ers tackle Joe Staley, guard Joe Looney, and guard Al Netter work on blocking drills during a NFL Super Bowl XLVII football practice in New Orleans
San Francisco 49ers tackle Joe Staley (L), guard Joe Looney (C), and guard Al Netter work on blocking drills during a NFL Super Bowl XLVII football practice in New Orleans January 31, 2013. REUTERS/Jeff Haynes