Sleepy baseball players

Fatigued players make bad decisions? Not so fast …


Last week I linked to a study by Vanderbilt University researchers which concluded that player fatigue leads to poor decision making on their part as the season wears on. Swinging at more pitches out of the strike zone and whatnot. The research goes further to suggest that baseball’s crackdown on stimulants exacerbated this.

Ben Lindbergh of Baseball Prospectus, however, is not so impressed:

… while a sleepy player might suffer from impaired performance, it’s a stretch to say that the league as a whole has worse plate discipline due to fatigue later in the season, and an even greater stretch to suggest that the amphetamine ban has produced a marked uptick in player fatigue. Those things might be true, but this study hasn’t shown them to be true.

Ben digs in to the plate discipline numbers and the data before and after the stimulant crackdown and comes away unconvinced by the study’s conclusions.

Certainly worth your time if this stuff interests you.

Dan Jennings asked to return as the Marlins GM

Dan Jennings
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Dan Jennings‘ tenure as the Marlins manager has not been great and the team is now actively looking for his replacement. But his old job is there waiting for him if he wants it, reports Clark Spencer of the Miami Herald: Jennings has been asked to come back as the team’s general manager.

Or maybe “asked” is not correct. Team President David Samson said “there’s no decision” for Jennings to make and that he’s still “a signed member” of the team’s front office, reporting to baseball operations president Michael Hill.

Reports last month suggested that Jennings would take a wait-and-see approach regarding returning to the Marlins front office, with hopes of possibly landing a GM job in another organization with greater control than he’s had and will have with the multi-headed Marlins management team. The Mariners, for one, were a team Jennings was said to have his eye on. But that job has been filled and it would not seem like such opportunities have presented themselves to him.

So: it would seem a good bet that Jennings is back upstairs with the Marlins soon. Because the Marlins fully expect him to be.

Royals line up rotation for ALDS: Ventura, Cueto, Volquez

Yordano Ventura
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Making official what manager Ned Yost talked about last week, the Royals announced their rotation for the ALDS versus the Wild Card game winner: Yordano Ventura, not Johnny Cueto, will get the Game 1 assignment against the Yankees or Astros, followed by Cueto in Game 2 and Edinson Volquez in Game 3.

It’s quite a turnaround for Ventura, who pitched his way out of the rotation and was briefly demoted to Triple-A, only to quickly return and go 7-1 with a 2.38 ERA in his final 11 starts.

When the Royals acquired Cueto from the Reds they did so with the intention of the impending free agent becoming their top-of-the-rotation ace, but he mostly struggled with a 4.76 ERA in 13 post-trade starts.

Volquez led the Royals with 200 innings, starting 33 games with a 3.55 ERA and 155/72 K/BB ratio while allowing just 16 homers in 850 plate appearances.