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Study: West teams at a disadvantage due to jet lag

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Every year, when the schedules are released, we often hear about the teams that have it worst. Almost always, those teams are West teams. According to MLB.com, teams in the West division of their respective leagues had the top eight most travel-heavy schedules in 2016. The full list:

Team League Division Miles
Mariners AL West 47,704
Angels AL West 44,945
Athletics AL West 42,119
Rangers AL West 41,128
Dodgers NL West 40,294
Giants NL West 39,341
Astros AL West 38,553
Padres NL West 37,363
Rays AL East 36,916
Red Sox AL East 36,896
D-Backs NL West 35,312
Yankees AL East 35,252
Marlins NL East 35,226
Rockies NL West 33,287
Blue Jays AL East 32,895
Orioles AL East 32,322
Braves NL East 29,236
Royals AL Central 29,077
Twins AL Central 28,948
Phillies NL East 28,351
Mets NL East 26,832
White Sox AL Central 26,538
Cardinals NL Central 26,451
Pirates NL Central 26,134
Brewers NL Central 25,620
Tigers AL Central 25,450
Indians AL Central 25,176
Reds NL Central 25,108
Nationals NL East 24,664
Cubs NL Central 24,271

The averages by division:

  • AL East: 34,856 miles
  • AL Central: 25,176
  • AL West: 42,890
  • NL East: 28,862
  • NL Central: 25,517
  • NL West: 37,119

The maps aren’t up for 2017 yet, but rest assured that West teams will once again have it worst. It’s easy to see why, taking a look at the map on MLB.com. If you draw a line to split Texas in half and go straight up through North Dakota, there are only eight teams to the left of that line, leaving the other 23 condensed on the right side. When West teams aren’t playing intra-division games, they are traveling. That’s often not the case for East and Central teams. The Phillies and Pirates, for example, don’t even have to leave the state to play each other.

As Gizmodo points out, a study published today in the Proceedings of the National Academy of Sciences found a link between jet lag and performance. Sleep scientist Ravi Allada of Northwestern University analyzed 4,919 games, finding that teams that traveled East performed worse than those that traveled West. Allada and his colleagues adjusted for home field advantage and park effects.

Specifically, teams that traveled from the West to the East lost more often than East teams traveling West. They gave up more runs and scored less runs. They hit for a lower batting average, on-base percentage, and slugging percentage. They gave up more home runs, accounting for most of the decline in run prevention.

There was a peculiar finding. Allada found that jet lagged home teams performed worse than jet lagged visiting teams. He hypothesizes that “teams may be more cognizant of their schedules when traveling away, thus mitigating jet lag effects,” he told Gizmodo.

Donaldson ejected for kicking dirt on plate after home run

David Banks-USA TODAY Sports
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Minnesota’s Josh Donaldson managed to get ejected while hitting a home run.

Donaldson barked at plate umpire Dan Bellino for the second time in the sixth inning of a 4-3 loss to the Chicago White Sox on Thursday.

With the score 2-2, Bellino called a strike when the 2015 AL MVP checked his swing on a 2-0 pitch from Reynaldo Lopez.

Manager Rocco Baldelli came out to speak with Bellino, and Donaldson homered down the left-field line on the next offering. After rounding the bases, Donaldson kicked dirt at home plate as he crossed it.

Bellino ejected him immediately, and Donaldson, realizing he had missed home plate, returned to the plate to touch it and then argued as he kicked more dirt on it.

Donaldson also had argued with Bellino on a 1-1 breaking ball in the first inning that appeared to be high but was called a strike, leading to a strikeout.

“We need Josh on the field, out there playing, and at third base,” Baldelli said. “That’s when we’re at our best. And so that’s really the end of it. I think we can move past it at his point, and go from here.”

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