Fatigued ballplayers make worse decisions as the season goes on

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Drug dealers who sell greenies Vanderbilt University neurologist Scott Kutscher discovered something interesting:

To see whether baseball players suffer the effects of sleep loss as the season drags on (or skips along for six non-tedious months, depending on your inclinations), Kutscher and his colleagues looked at data from 2011 back to 2006, after the MLB cracked down on steroid use. For each team, they tracked how often players swung at pitches outside the strike zone. Over the course of the season, the researchers saw a steady increase in how many out-of-the-strike-zone pitches players swung at. These badly judged swings went up by about six-tenths of a percent each month.

There may be some other factors at play like less-experienced players filling out rosters late in the season, but Kutscher says that these results tracked what they’ve observed in other people who have suffered from fatigue and sleep-deprivation.

But I’m sure that players who took amphetamines to “pep up” before games back in the 60s and 70s didn’t experience any performance-enhancement at all.

(thanks to Morgan Jackson for the heads up)

Jonny Venters is back in the majors

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The Rays announced on Wednesday that the club purchased the contract of lefty reliever Jonny Venters from Triple-A Durham. The 33-year-old hasn’t pitched in the majors since 2012 due to a continuous battle with arm injuries. The Rays note that he has undergone two and a half Tommy John surgeries, which is a number that seems to be in dispute.

Venters signed a minor league contract with the Rays in December. With Durham so far this season, he gave up two runs (one earned) on four hits and five walks with six strikeouts in 5 2/3 innings.

Before the injuries, Venters was among the best relievers in 2010-11. In those two seasons, he posted a combined 1.89 ERA with 189 strikeouts and 82 walks in 171 innings.