The landscape of the 2013 Major League Baseball season will change over the next week.
From major to minor moves at the non-waiver trade deadline, proven veterans will be added for the stretch run, while franchises cast away the futures of unproven products.
In some cases, the results will be disastrous. On Thursday, Zack Wheeler of the New York Mets continued his strong opening act in the big leagues, moving to 4-1 with a 3.72 ERA during a victory over the Atlanta Braves. Meanwhile, the team that traded him at the deadline two years ago, the San Francisco Giants, continues to struggle in 2013 due to a lack of pitching depth.
On the other hand, a major deadline move can be the difference between missing the postseason or reaching October. In 1998, the Houston Astros gave up a haul for Randy Johnson, but reaped the benefits of the Big Unit dominating the National League down the stretch to lead the Astros to the NL Central title.
Over the past decade, there has been no shortage of major moves around July 31.
Here are the 10 most impactful trade deadline moves of the past 10 years.