Question: how does mlb postseason roster work?
Answer: 15 in order to be eligible for postseason play. In a typical season, any player who is on the 40-man roster or 60-day injured list as of 11:59 p.m. ET on Aug. 31 is eligible for the postseason. ... (All players who have served a suspension for PEDs in a given season are ineligible for postseason play that year.)