Hey kids: don’t swing a weighted bat in the on deck circle

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Here’s an interesting article in the Wall Street Journal. It’s about some studies of hitters who use weighted bats or doughnuts on their bats in the on deck circle. Turns out that, contrary to conventional wisdom, using a weighted bat for practice hacks does not speed up one’s swing when one uses a naked bat in the batter’s box. In fact, it slows it down.

There are lots of caveats here. The sample size in the studies are small and they all involve college and high school players, not big leaguers. The results, however, are consistent with previous studies and they do make some intuitive sense. This is particularly the case with batting doughnuts, which add weight to a very concentrated portion of the bat, thereby changing the center of gravity and thus the swing mechanics of the hitter.

Whether this is applicable at large or to higher level hitters or not, I still find it kind of neat. I always like it when people scrutinize ingrained habits and ask whether or not that thing we’ve always done is, in fact, worth doing.

Rockies acquire Zac Rosscup from Cubs

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The Rockies announced a minor swap of relief pitchers on Monday evening. The Cubs sent lefty Zac Rosscup to the Rockies in exchange for right-hander Matt Carasiti.

Rosscup, 29, was designated for assignment by the Cubs last Thursday. He spent only two-thirds of an inning in the majors this year and has a 5.32 career ERA across 47 1/3 innings. Rosscup has spent most of the season with Triple-A Iowa, posting a 2.60 ERA in 27 2/3 innings.

Carasiti, 25, spent 15 2/3 innings in the majors last year, putting up an ugly 9.19 ERA. With Triple-A Albuquerque this season, he compiled a 2.37 ERA and a 43/13 K/BB ratio in 30 1/3 innings.

U.S. Court of Appeals affirms ruling that the minor leagues are exempt from federal antitrust law

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The Associated Press reported that on Monday, the U.S. Court of Appeals for the 9th Circuit affirmed a district court ruling which holds that the minor leagues are exempt from federal antitrust law, just like the major leagues.

In 2015, four minor leaguers sued Major League Baseball, alleging that MLB violated antitrust laws with its hiring and employment policies. They accused MLB of “restrain[ing] horizontal competition between and among” franchises and “artificially and illegally depressing” the salaries of minor league players.

The U.S. Court of Appeals said the players failed to state an antitrust claim, as the Curt Flood Act of 1998 exempted Minor League Baseball explicitly from antitrust laws.

This case is separate from the Aaron Senne case in which Major League Baseball is accused of violating the Fair Labor Standards Act. That case was recertified as a class action lawsuit in March. In December, Major League Baseball established a political action committee (PAC), which came months after two members of Congress sought to change language in the FLSA so that minor league players could continue to be paid substandard wages.