Once the Toronto Blue Jays officially announce the Dylan Cease signing they will have 38 players on the active roster. Cease is also unlikely to be the last free agent they sign this winter, considering they are in the market for a top of the line reliever, and are hoping to bring back Bo Bichette. Those two moves would put them at the max of having a full 40-man roster - but that doesn't mean they can't add to it in the meantime.
The Rule 5 Draft will take place nine days from now on Dec.