Baseball Teams and Jet Lag

Do baseball teams that have to travel across time zones, and are therefore subject to jet lag, more likely to lose games? This question, resulting in the concept of circadian advantage, was taken up in a letter in Nature back in 1995:

Many factors undoubtedly contribute to winning baseball games, but our data indicate that one critical, previously unrecognized component of the ‘home field’ advantage of east and west coast baseball teams involves previous transcontinental travel by the visiting team within the preceding two days, but only if the direction of travel is eastward…

While the performance decrements described her might seem small in magnitude, their consequences for competitive athletics are substantial.

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