Countdown to the MLB Playoffs: Playoff bracket set
Phillies clinch 4th consecutive NL East title - The San Diego Union-Tribune
Philadelphia Phillies Clinch NL East: What Phils Need To Succeed In MLB Playoffs, News, Scores, Highlights, Stats, and Rumors
10 games that swung the Nationals' playoff odds - The Washington Post
Washington Nationals - Wikipedia
Nationals clinch the NL East: Beer, champagne, fire helmets and Robert Frost - Federal Baseball
Washington Nationals Clinch Postseason Berth
October 1, 2012: Washington Nationals lose game, clinch first NL East division title – Society for American Baseball Research
Morning Briefing: Braves Clinch Sixth Consecutive NL East Title - Metsmerized Online
Atlanta Braves clinch fifth straight NL East title with win over Miami Marlins - ESPN
Nationals clinch NL East title with win and Mets loss