What happened: The cutoff applies to players on 40-man rosters. Outright waiver claims may continue afterward, but trades cannot.
Why it matters: The single deadline forces contenders and sellers to complete their in-season deals at the same time. Every Aug. 3 game starts at 6:40 p.m. ET or later, reducing the chance of a player changing clubs during a game.
By the numbers: The deadline is five days away and 40 minutes before the day's earliest first pitch.
What to watch: Roster decisions will sharpen as clubs enter the final stretch of negotiations.