San Francisco Giants First-Place Elimination Scenario
San Francisco must win 24 more games (46 total) to avoid elimination from first place.
Here are the final standings in a scenario in which San Francisco finishes in first place with 46 wins:

Team             W	L	PCT	GB
San Francisco    46	116	0.284	0.00
Los Angeles      46	116	0.284	0.00
Colorado         44	118	0.272	2.00
Arizona          44	118	0.272	2.00
San Diego        44	118	0.272	2.00

Tie breakers
San Francisco wins the series with Los Angeles 8 games to 5

To construct the scenario, we start with the current standings in the division:
Team             W	L	GL	PCT	GB
Los Angeles      37	21	104	0.638	0.0
San Diego        32	25	105	0.561	4.5
Arizona          31	26	105	0.544	5.5
San Francisco    22	36	104	0.379	15.0
Colorado         22	37	103	0.373	15.5

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 1 additional game(s) against Colorado and loses 5.
Arizona loses the series 6 games to 7.
Arizona wins 0 additional game(s) against teams outside the division and loses 71.

Arizona currently has 0 win(s) against Los Angeles and 3 loss(es).
Arizona wins 3 additional game(s) against Los Angeles and loses 7.
Arizona loses the series 3 games to 10.
Arizona wins 0 additional game(s) against teams outside the division and loses 71.

Arizona currently has 1 win(s) against San Diego and 1 loss(es).
Arizona wins 9 additional game(s) against San Diego and loses 2.
Arizona wins the series 10 games to 3.
Arizona wins 0 additional game(s) against teams outside the division and loses 71.

Arizona currently has 6 win(s) against San Francisco and 0 loss(es).
Arizona wins 0 additional game(s) against San Francisco and loses 7.
Arizona loses the series 6 games to 7.
Arizona wins 0 additional game(s) against teams outside the division and loses 71.

Colorado currently has 2 win(s) against Los Angeles and 5 loss(es).
Colorado wins 6 additional game(s) against Los Angeles and loses 0.
Colorado wins the series 8 games to 5.
Colorado wins 0 additional game(s) against teams outside the division and loses 74.

Colorado currently has 1 win(s) against San Diego and 6 loss(es).
Colorado wins 6 additional game(s) against San Diego and loses 0.
Colorado wins the series 7 games to 6.
Colorado wins 0 additional game(s) against teams outside the division and loses 74.

Colorado currently has 2 win(s) against San Francisco and 0 loss(es).
Colorado wins 5 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 74.

Los Angeles currently has 2 win(s) against San Diego and 1 loss(es).
Los Angeles wins 0 additional game(s) against San Diego and loses 10.
Los Angeles loses the series 2 games to 11.
Los Angeles wins 0 additional game(s) against teams outside the division and loses 72.

Los Angeles currently has 3 win(s) against San Francisco and 4 loss(es).
Los Angeles wins 2 additional game(s) against San Francisco and loses 4.
Los Angeles loses the series 5 games to 8.
Los Angeles wins 0 additional game(s) against teams outside the division and loses 72.

San Diego currently has 3 win(s) against San Francisco and 3 loss(es).
San Diego wins 0 additional game(s) against San Francisco and loses 7.
San Diego loses the series 3 games to 10.
San Diego wins 0 additional game(s) against teams outside the division and loses 71.

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