As reported by Jon Heyman of CBSSports.com, it seems your Seattle Mariners are in hot pursuit of acquiring starting pitching on the trade market. This news has raised a few eyebrows around the Pacific Northwest, as it’s plainly evident that the team’s offense (ranked dead last in OPS in the American League) is in much greater need of a pick-me-up than the rotation (ranked first in Starting Pitcher WHIP in the American League). But before chastising the ballclub for favoring areas of strength over areas of weakness, let’s try to make some sense of what the M’s might be trying to achieve here.
For starters (pun intended), in spite of having assembled a rotation among the best in baseball, Mariners starting pitchers are staring down the barrel of a regression in the season’s second half. Without getting into too much detail surrounding the advanced metrics, fifth starter Chris Young has outperformed his career numbers, while de facto third starter Roenis Elias has logged more mileage on his left arm thus far than at any other point in his professional career. When it comes to Young, even a slight regression should be tolerable – his 1.17 WHIP currently ranks 10th among AL starting pitchers. But with Elias, there should be slightly more cause for concern.