Trade-a-Day: 5 relievers the Seattle Mariners should trade for

Only nine days remain before the MLB trading deadline.

While Seattle Mariners general manager Jerry Dipoto is expected to be one of the league’s most active sellers over the next week and change, it should not surprise anyone if he goes out and actually buys a Major Leaguer or two. These Major Leaguers don’t necessarily have to be what Tommy Pham was to the Rays last year, and they may be as little as an acquisition of a middling reliever with three or more years of club control.

Yesterday, Dipoto landed one of these exact deals in making Matt Magill the newest member of the league’s worst bullpen. As injuries have struck three of the Mariners’ most talented relievers, what once was a…