The Top 5 Biggest Trade Deadline Deals in MLB History

Every July, contenders trade away top prospects for a two-month rental and a prayer. Most of the time, it doesn't work out. This week, we're digging into the rare exceptions—the five biggest deadline deals that actually paid off, and the ones that looked like genius but were secretly a disaster. Today, we’re counting down the top five biggest trade deadline deals of all time. Today, on Rounders: A…