The relevant roster is whichever active lineup is listed on the resolution source at market creation. Name changes or aliases referring to the same player do not qualify as roster changes. For the purpose of this market, "roster change" refers to any official signing, transfer, benching to inactive/reserve, release, retirement, or departure of a player from the active lineup.
This includes adding new players (transfers, free agent signings, or loans), removing players (to inactive, free agency, or other teams), or any change resulting in a different active roster. A qualifying roster change must occur on or before the deadline, and be reflected in the resolution source. Once the change appears in the resolution source, it must remain live for at least 48 continuous hours to be valid.