Tatís had wrist surgery in mid-march after a motorcycle accident in the offseason. The team has been extremely cautious will the healing, which makes sense considering he is a $340,000,000 investment. It was originally only supposed to be a three month absence into the season but here we are looking at the All-Star break without much of a time table.
On June 29th, Tatís himself said the doctor told him he could swing a bat in 2 weeks. That puts him at potentially starting this weekend. If he starts working out now I would put it at about a month before he is ready to face big league pitching with a rehab stint included. Players tend to have a bit of a power outage coming back from wrist injuries so hopefully Tatís can buck that trend.
If he is able to start playing big league games in about a month that would give him approximately 35 games before the play off starts to get his timing down. The Padres would love to get their star short stop who led the NL in home runs last season back for the home stretch.