Possible Clues:

• 'Beverly Hills 90210' restaurant owner and others
• D.C. team since '05
• Max Scherzer’s team
• They play about a mi. south of the Capitol
• DC ball club
• Team that drafted Bryce Harper, briefly
• D.C. ball team, briefly
• D.C. diamond denizens
• Their unis are red, white and blue
• Cubs' opponents in a 2017 division series, briefly