San Francisco mayor Edwin Lee, left, laughs alongside Baltimore mayor Stephanie Rawlings-Blake as he wears Baltimore Ravens-themed work gloves that Rawlings-Blake gave him while they work with volunteers on a vacant lot in Baltimore, Friday, April 26, 2013. Lee visited his counterpart in Baltimore to make good on a Super Bowl XLVII bet to take part in a day of service in the winner's city. The Ravens beat the 49ers 34-31. (AP Photo/Patrick Semansky)
