San Francisco Giants First-Place Eliminiation Scenario
San Francisco must win 21 more games (33 total) to avoid elimination from first place.
Here are the final standings in a scenario in which San Francisco finishes in first place with 33 wins:

Team             W	L	PCT	GB
San Francisco    33	129	0.204	0.00
Arizona          32	130	0.198	1.00
Colorado         32	130	0.198	1.00
Los Angeles      32	130	0.198	1.00
San Diego        32	130	0.198	1.00

To construct the scenario, we start with the current standings in the division:
Team             W	L	GL	PCT	GB
Los Angeles      15	11	136	0.577	0.0
San Diego        14	13	135	0.519	1.5
Arizona          12	14	136	0.462	3.0
San Francisco    12	14	136	0.462	3.0
Colorado         6	19	137	0.240	8.5

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

Arizona currently has 5 win(s) against Colorado and 2 loss(es).
Arizona wins 6 additional game(s) against Colorado and loses 0.
Arizona wins the series 11 games to 2.
Arizona wins 0 additional game(s) against teams outside the division and loses 95.

Arizona currently has 0 win(s) against Los Angeles and 0 loss(es).
Arizona wins 0 additional game(s) against Los Angeles and loses 13.
Arizona loses the series 0 games to 13.
Arizona wins 0 additional game(s) against teams outside the division and loses 95.

Arizona currently has 0 win(s) against San Diego and 0 loss(es).
Arizona wins 10 additional game(s) against San Diego and loses 3.
Arizona wins the series 10 games to 3.
Arizona wins 0 additional game(s) against teams outside the division and loses 95.

Arizona currently has 2 win(s) against San Francisco and 2 loss(es).
Arizona wins 4 additional game(s) against San Francisco and loses 5.
Arizona loses the series 6 games to 7.
Arizona wins 0 additional game(s) against teams outside the division and loses 95.

Colorado currently has 0 win(s) against Los Angeles and 0 loss(es).
Colorado wins 13 additional game(s) against Los Angeles and loses 0.
Colorado wins the series 13 games to 0.
Colorado wins 0 additional game(s) against teams outside the division and loses 95.

Colorado currently has 1 win(s) against San Diego and 2 loss(es).
Colorado wins 6 additional game(s) against San Diego and loses 4.
Colorado wins the series 7 games to 6.
Colorado wins 0 additional game(s) against teams outside the division and loses 95.

Colorado currently has 0 win(s) against San Francisco and 0 loss(es).
Colorado wins 7 additional game(s) against San Francisco and loses 6.
Colorado wins the series 7 games to 6.
Colorado wins 0 additional game(s) against teams outside the division and loses 95.

Los Angeles currently has 2 win(s) against San Diego and 3 loss(es).
Los Angeles wins 0 additional game(s) against San Diego and loses 8.
Los Angeles loses the series 2 games to 11.
Los Angeles wins 0 additional game(s) against teams outside the division and loses 92.

Los Angeles currently has 3 win(s) against San Francisco and 0 loss(es).
Los Angeles wins 4 additional game(s) against San Francisco and loses 6.
Los Angeles wins the series 7 games to 6.
Los Angeles wins 0 additional game(s) against teams outside the division and loses 92.

San Diego currently has 3 win(s) against San Francisco and 4 loss(es).
San Diego wins 3 additional game(s) against San Francisco and loses 3.
San Diego loses the series 6 games to 7.
San Diego wins 0 additional game(s) against teams outside the division and loses 98.

# San Francisco Giants' magic number
# San Francisco's magic number
# Giants' magic number
# MLB Playoff Race