The Rickwood Field game on Thursday between the Giants and St. Louis Cardinals is so big that a trio of dignitaries knocked on the doors of former Negro Leagues players in Birmingham, Alabama, and presented them with golden tickets to be honored on the special day. Dr. Layton Revel, former Philadelphia Phillies All-Star slugger Ryan Howard and Birmingham mayor Randall Woodfin made the door-to-door pilgrimage to recognize about a dozen African-American players from an era when doors to the big leagues were closed for them.