Philadelphia Phillies First-Place Eliminiation Scenario
Philadelphia must win 21 more games (36 total) to avoid elimination from first place.
Here are the final standings in a scenario in which Philadelphia finishes in first place with 36 wins:

Team             W	L	PCT	GB
Philadelphia     36	126	0.222	0.00
Atlanta          35	127	0.216	1.00
Miami            35	127	0.216	1.00
Washington       35	127	0.216	1.00
New York         35	127	0.216	1.00

To construct the scenario, we start with the current standings in the division:
Team             W	L	GL	PCT	GB
Atlanta          16	6	140	0.727	0.0
Philadelphia     15	9	138	0.625	2.0
New York         12	11	139	0.522	4.5
Washington       10	12	140	0.455	6.0
Miami            6	19	137	0.240	11.5

Next, we show how the remaining series of games plays out in the scenario:

Atlanta currently has 4 win(s) against Miami and 1 loss(es).
Atlanta wins 8 additional game(s) against Miami and loses 0.
Atlanta wins the series 12 games to 1.
Atlanta wins 0 additional game(s) against teams outside the division and loses 99.

Atlanta currently has 1 win(s) against New York and 2 loss(es).
Atlanta wins 7 additional game(s) against New York and loses 3.
Atlanta wins the series 8 games to 5.
Atlanta wins 0 additional game(s) against teams outside the division and loses 99.

Atlanta currently has 2 win(s) against Philadelphia and 1 loss(es).
Atlanta wins 4 additional game(s) against Philadelphia and loses 6.
Atlanta loses the series 6 games to 7.
Atlanta wins 0 additional game(s) against teams outside the division and loses 99.

Atlanta currently has 0 win(s) against Washington and 0 loss(es).
Atlanta wins 0 additional game(s) against Washington and loses 13.
Atlanta loses the series 0 games to 13.
Atlanta wins 0 additional game(s) against teams outside the division and loses 99.

Miami currently has 0 win(s) against New York and 0 loss(es).
Miami wins 10 additional game(s) against New York and loses 3.
Miami wins the series 10 games to 3.
Miami wins 0 additional game(s) against teams outside the division and loses 90.

Miami currently has 0 win(s) against Philadelphia and 0 loss(es).
Miami wins 6 additional game(s) against Philadelphia and loses 7.
Miami loses the series 6 games to 7.
Miami wins 0 additional game(s) against teams outside the division and loses 90.

Miami currently has 0 win(s) against Washington and 0 loss(es).
Miami wins 13 additional game(s) against Washington and loses 0.
Miami wins the series 13 games to 0.
Miami wins 0 additional game(s) against teams outside the division and loses 90.

New York currently has 0 win(s) against Philadelphia and 0 loss(es).
New York wins 11 additional game(s) against Philadelphia and loses 2.
New York wins the series 11 games to 2.
New York wins 0 additional game(s) against teams outside the division and loses 90.

New York currently has 0 win(s) against Washington and 0 loss(es).
New York wins 6 additional game(s) against Washington and loses 7.
New York loses the series 6 games to 7.
New York wins 0 additional game(s) against teams outside the division and loses 90.

Philadelphia currently has 2 win(s) against Washington and 1 loss(es).
Philadelphia wins 5 additional game(s) against Washington and loses 5.
Philadelphia wins the series 7 games to 6.
Philadelphia wins 1 additional game(s) against teams outside the division and loses 91.

# Philadelphia Phillies' magic number
# Philadelphia's magic number
# Phillies' magic number
# MLB Playoff Race