Tim Lincecum will be the starting pitcher for the Giants and will face off against Ranger's ace Cliff Lee. First pitch is scheduled for just before 5 p.m.
As anticipation builds, orange can be seen everywhere in San Francisco. Landmark buildings including the Ferry Building, City Hall and Coit Tower are all lit up in orange.
Mayor Gavin Newsom and Arlington Mayor Robert Cluck have made a friendly wager on the outcome of the series, both agreeing that the losing city's mayor will travel to the winning city and join the winning city's mayor in a day of support for local youth and community service initiatives, with both mayors wearing the jersey of the World Series Champion team.
At one point, Mayor Cluck did say he would be open to having Mayor Newsom wear a big cowboy hat if the Rangers win.