MLB teams shake up their rosters for postseason push before the trade deadline

The MLB trade deadline was full of surprises this year. 

The 6 p.m. ET deadline Thursday brought plenty of unexpected moves, including high-leverage relievers going to contenders and a reunion in Houston.

Below are four teams who made big moves. 

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Houston Astros third baseman Isaac Paredes is out for the season after he injured his hamstring, and the team turned to one of its former stars to replace Paredes. 

The team acquired Correa...