Washington does not have a first-place clinch number

Here is a scenario in which Washington wins all 54 of their remaining games (103 total) but does not but does not clinch first place.

To construct the scenario, we start with the current standings in the division:
Team             W	L	GL	PCT	GB
New York         56	51	55	0.523	0.0
Philadelphia     55	53	54	0.509	1.5
Atlanta          54	54	54	0.500	2.5
Washington       49	59	54	0.454	7.5
Miami            46	62	54	0.426	10.5

Next, we show how the remaining series of games in Washington's division plays out in the scenario:

Atlanta wins 6 games against Miami and loses 0.
Atlanta wins 3 games against New York and loses 0.
Atlanta wins 0 games against Philadelphia and loses 3.
Atlanta wins 0 games against Washington and loses 9.
Atlanta wins 33 games against teams outside the division and loses 0.

Miami wins 0 games against Atlanta and loses 6.
Miami wins 0 games against New York and loses 11.
Miami wins 0 games against Philadelphia and loses 6.
Miami wins 0 games against Washington and loses 9.
Miami wins 22 games against teams outside the division and loses 0.

New York wins 0 games against Atlanta and loses 3.
New York wins 11 games against Miami and loses 0.
New York wins 2 games against Philadelphia and loses 4.
New York wins 0 games against Washington and loses 11.
New York wins 24 games against teams outside the division and loses 0.

Philadelphia wins 3 games against Atlanta and loses 0.
Philadelphia wins 6 games against Miami and loses 0.
Philadelphia wins 4 games against New York and loses 2.
Philadelphia wins 0 games against Washington and loses 4.
Philadelphia wins 35 games against teams outside the division and loses 0.

Washington wins 9 games against Atlanta and loses 0.
Washington wins 9 games against Miami and loses 0.
Washington wins 11 games against New York and loses 0.
Washington wins 4 games against Philadelphia and loses 0.
Washington wins 21 games against teams outside the division and loses 0.

Combining the current standings with the wins and losses from the scenario results in the following final standings:
TEAM             W	L	GL	PCT
Philadelphia     103	59	0.636	0.0
Washington       103	59	0.636	0.0
Atlanta          96	66	0.593	7.0
New York         93	69	0.574	10.0
Miami            68	94	0.420	35.0

# Washington Nationals's magic number
# Washington's magic number
# Nationals's magic number
# MLB Playoff Race