There are two reasons why a trade might be difficult to execute for the Cardinals. The first is Arenado's full no-trade clause. In the offseason, he used it to veto a deal with the Houston Astros. That could scare some teams away from trying to trade for the Cardinals' third baseman.

An injury to Isaac Paredes has the Houston Astros scrambling to find a potential replacement at third base prior to the trade deadline.

The Houston Astros seem determined to land someone who can play third base for them. That mentality stems from the hamstring injury Isaac Paredes suffered, whic