The 2021 MLB trade deadline was the busiest trade deadline we've seen in years, and all those moves made at the deadline have helped shape the postseason races. The calendar flips to September on Wednesday and still 13 teams are within at least five games of a postseason spot as of Tuesday morning.

Monday was the one-month anniversary of the trade deadline, and since we're about to head into the stretch run, why don't we take a second to review the deadline moves have had the most (and least) impact thus far? We're not going to review every single trade (there were a lot of them!), just the ones involving notable players joining contenders. Let's get to it.

Instant impact

There's nothing quite as satisfying as a player coming over in a midseason trade and making a difference right away. Occasionally players will need a few days (or weeks) to settle in before they really contribute, and sometimes they hit the ground running. Here are the deadline moves that helped the team without a waiting period.

Kris Bryant

Kris Bryant hit a home run in his first game with the Giants and he's been an impact middle-of-the order presence since arriving. Also, he's played four positions with San Francisco (third base and the three outfield spots), giving manager Gabe Kapler all sorts of flexibility to use his entire roster and maximize matchups. Bryant has been a perfect fit for the Giants and vice versa. A new contract when he becomes a free agent after the season would make sense for both sides.