Entering Saturday’s action, every AL East team has a negative run differential

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On Saturday morning, ESPN’s Buster Olney passed along the interesting fact that all five teams in the American League East has a negative run differential. The first-place Yankees are tied for the worst differential at -10 with the Red Sox, while the second-place Orioles are at -1, the third-place Blue Jays are at -6, and the last-place Rays are at -2.

It’s still early so run differential doesn’t mean a whole lot. But over a larger sample of games, run differential correlates strongly to winning baseball games. By this simple arithmetic function, we can conclude with a large grain of salt that the five AL East teams have played no better than average baseball to begin the season.

The only other division with three teams in the red in run differential is the AL West. The Rangers (-2), Mariners (-6), and the Astros (-51) have played subpar baseball. It’s… a bit of an understatement for the Astros.

Report: Welington Castillo to be suspended 80 games for violating Joint Drug Agreement

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Ken Rosenthal of The Athletic confirms a report from journalist Américo Celado that White Sox catcher Welington Castillo will be suspended 80 games for violating baseball’s Joint Drug Agreement. Castillo was believed to have used a steroid, but according to Rosenthal, the substance was not a steroid. More details should come on Thursday.

Castillo, 31, entered Wednesday’s action batting .270/.314/.477 with six home runs and 15 RBI in 118 plate appearances. He has gotten the bulk of the work behind the plate, backed up by Omar Narváez.

Castillo’s absence will likely prompt the White Sox to call up Kevan Smith from Triple-A Charlotte. Smith battled an ankle injury in March and April, so he got a late start to the season. In 102 PA at Triple-A, he has hit .283/.343/.457.