MLB playoff tiebreakers, explained: How standings are determined for AL and NL divisional, wild-card ties
A three-team tie, which is still on the table in the NL between the Braves, Diamondbacks and Mets, would be broken by the same three-team procedure as the divisional tiebreaker, with record against the division still part of the procedure even with the Arizona in a different division than Atlanta and New York.