On a deadline day where there was much more quantity (15 trades) than quality, the guy who could make the biggest impact on the rest of the season was the guy who didn't get traded.
The teams that made moves concentrated on incremental upgrades that may or may not help them win a championship. The team that made almost no moves showed belief in a team and a star who have so far badly underachieved.
The biggest move of the month was the Los Angeles Dodgers trading for Manny Machado, but that happened two weeks ago.