Why acquiring Randy Arozarena could be a key move for the Seattle Mariners?

The news really did not surprise. Expectations about the possible departure of Randy Arozarena from the Tampa Bay Rays were highly probable. So we didn't even have to wait for the trade deadline: the Seattle Mariners acquired Cuban outfielder Randy Arozarena at a time when the American League West Division pennant could begin to be defined.*

*The Mariner…