Playoff rosters must be submitted at the conclusion of the regular season , and are allowed to be altered from series to series , but may not be changed mid-series .
There is an injury that requires use of the Playoff Disabled List .
Playoff rosters must be submitted at the conclusion of the regular season , and are allowed to be altered from series to series , but may not be changed mid-series unless there is an injury that requires use of the Playoff Disabled List .