Miami has been eliminated from first place.

To show that Miami is eliminated from first place, we start with the current standings:
            Team	W	L	GL	PCT	GB
    Philadelphia	91	61	10	0.599	0.0
        New York	78	73	11	0.517	12.5
           Miami	71	80	11	0.470	19.5
         Atlanta	69	83	10	0.454	22.0
      Washington	62	90	10	0.408	29.0
           Total	371	387	52

Miami can finish the season with at most 71 + 11 = 82 wins and will finish the season behind the following teams:
Philadelphia has already won 91 games.
# Miami Marlins' magic number
# Miami's magic number
# Marlins' magic number
# MLB Playoff Race