With the non-waiver trade deadline already past, teams must now place their players on revocable waivers before they may trade their players.
This part of the year can become a bit of a chess match for teams in contention.
Some contenders will place a claim on a player just to block a rival from acquiring that player. Once that happens, it is up to the teams what happens next.
The two teams will have a window of time to reach terms on a trade, the team placing the player on waivers can choose to just allow the claiming team to take on the player and their remaining contract, or they may pull him back off waivers and hold onto him for the remainder of the season.
If the player clears waivers, their current team is then free to explore a trade with any of the 29 other teams.
Any waiver trade must occur before Aug. 31 if the player involved is to be considered eligible for the postseason with their new club.
Here's a look at 20 players that could be involved in waiver activity before the end of the month.