The Philadelphia Phillies and Atlanta Braves start a four-game series on Friday night at Citizens Bank Park, but both teams could have different-looking rosters by the time they finish the series Monday.
Both clubs have already been active sellers on the trade market. Atlanta dealt starter Jaime Garcia to Minnesota for 19-year-old pitcher Huascar Ynoa earlier in the week.
Philadelphia shipped right-handed reliever Pat Neshek to the Colorado Rockies on Wednesday night in exchange for a trio of prospects.
The teams could make more deals before Monday's 4 p.