New York Yankees First-Place Elimination Scenario
New York must win 5 more games (90 total) to avoid elimination from first place.
Here are the final standings in a scenario in which New York finishes in first place with 90 wins:

Team             W	L	PCT	GB
New York         90	72	0.556	0.00
Toronto          89	73	0.549	1.00
Boston           89	73	0.549	1.00
Tampa Bay        81	81	0.500	9.00
Baltimore        78	84	0.481	12.00

To construct the scenario, we start with the current standings in the division:
Team             W	L	GL	PCT	GB
Toronto          89	63	10	0.586	0.0
New York         85	67	10	0.559	4.0
Boston           83	69	10	0.546	6.0
Tampa Bay        74	78	10	0.487	15.0
Baltimore        72	80	10	0.474	17.0

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

Baltimore currently has 5 win(s) against Boston and 8 loss(es).
Baltimore and Boston have no remaining games.
Baltimore loses the series 5 games to 8.
Baltimore wins 0 additional game(s) against teams outside the division and loses 0.

Baltimore currently has 3 win(s) against New York and 3 loss(es).
Baltimore wins 3 additional game(s) against New York and loses 4.
Baltimore loses the series 6 games to 7.
Baltimore wins 0 additional game(s) against teams outside the division and loses 0.

Baltimore currently has 5 win(s) against Tampa Bay and 5 loss(es).
Baltimore wins 3 additional game(s) against Tampa Bay and loses 0.
Baltimore wins the series 8 games to 5.
Baltimore wins 0 additional game(s) against teams outside the division and loses 0.

Baltimore currently has 6 win(s) against Toronto and 7 loss(es).
Baltimore and Toronto have no remaining games.
Baltimore loses the series 6 games to 7.
Baltimore wins 0 additional game(s) against teams outside the division and loses 0.

Boston currently has 9 win(s) against New York and 4 loss(es).
Boston and New York have no remaining games.
Boston wins the series 9 games to 4.
Boston wins 3 additional game(s) against teams outside the division and loses 1.

Boston currently has 8 win(s) against Tampa Bay and 2 loss(es).
Boston wins 0 additional game(s) against Tampa Bay and loses 3.
Boston wins the series 8 games to 5.
Boston wins 3 additional game(s) against teams outside the division and loses 1.

Boston currently has 3 win(s) against Toronto and 7 loss(es).
Boston wins 3 additional game(s) against Toronto and loses 0.
Boston loses the series 6 games to 7.
Boston wins 3 additional game(s) against teams outside the division and loses 1.

New York currently has 9 win(s) against Tampa Bay and 4 loss(es).
New York and Tampa Bay have no remaining games.
New York wins the series 9 games to 4.
New York wins 1 additional game(s) against teams outside the division and loses 2.

New York currently has 5 win(s) against Toronto and 8 loss(es).
New York and Toronto have no remaining games.
New York loses the series 5 games to 8.
New York wins 1 additional game(s) against teams outside the division and loses 2.

Tampa Bay currently has 6 win(s) against Toronto and 3 loss(es).
Tampa Bay wins 4 additional game(s) against Toronto and loses 0.
Tampa Bay wins the series 10 games to 3.
Tampa Bay wins 0 additional game(s) against teams outside the division and loses 0.

# New York Yankees' magic number
# New York's magic number
# Yankees' magic number
# MLB Playoff Race