One of the changes MLB is adding for the 2020 season is that teams are now allowed to have 26 players on their active roster, as opposed to the 25-man rosters of years past. The rule, however, limits teams to having 13 pitchers, which the Astros have already carried for most of the last few years. So their 26th man will be an extra position player, and Garrett Stubbs might just be the right guy for that spot.
Many teams have considered carrying a third catcher to fill that 26th roster spot, and it makes sense.