Here is your primer for every scenario that can happen in the National League today and the outcome. Currently, a Mets-Braves doubleheader is scheduled for Atlanta on Monday. Important to note: It’s unlikely that a game Monday that would affect seeding only would be played, though MLB still has yet to make that official, according to sources. Scenario 1: Braves win, Mets win, Diamondbacks win Outcome: Braves are in and at least one game is necessary Monday. If the Mets win the first game, they are in — and would be tied with Atlanta in record and head-to-head. The likelihood is they would not play the second game, as it would be for seeding purposes only. If the Mets lose Game 1 and win Game 2, they are in. If not, the Diamondbacks are in Scenario 2: Braves win, Mets win, Diamondbacks lose Outcome: Braves are in and play San Diego on Tuesday. Mets are in and play Milwaukee on Tuesday. Diamondbacks are out. No doubleheader Monday. Scenario 3: Braves win, Mets lose, Diamondbacks win Outcome: Braves are in and at least one game is necessary Monday. If the Mets win both doubleheader games, they are in. If the Mets lose either game, Diamondbacks are in. Scenario 4: Braves win, Mets lose, Diamondbacks lose Outcome: Braves are in and at least one game is necessary Monday. If the Mets win either game, they are in. If they lose both, the Diamondbacks are in. Scenario 5: Braves lose, Mets win, Diamondbacks win Outcome: Both games will be played Monday. The winner of Game 1 is in. If the loser of Game 1 wins Game 2, it is in as well. If a team is swept, it is out and the Diamondbacks are in. Scenario 6: Braves lose, Mets wins, Diamondbacks lose Outcome: Braves are in and play San Diego on Tuesday. Mets are in and play Milwaukee on Tuesday. Diamondbacks are out. No doubleheader Monday. Scenario 7: Braves lose, Mets lose, Diamondbacks win Outcome: Diamondbacks are in and at least one game is necessary Monday. If the Braves win either game, they are in. If the Mets win both doubleheader games, they are in and would face San Diego. Scenario 8: Braves lose, Mets lose, Diamondbacks lose Outcome: Braves are in and at least one game is necessary Monday. If the Mets win either game, they are in. If they lose both, the Diamondbacks are in. The upshot: The Braves are in a very good position. The Mets control their own destiny. And the Diamondbacks need quite a bit of help.