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FILE - In this Feb. 23, 2016, file photo, Kansas City Royals' Jarrod Dyson yawns as he waits to field balls during spring training baseball practice in Surprise, Ariz. Researchers say they've documented an unseen drag on major league baseball players that can wipe out home field advantage, make pitchers give up more home runs, and take some punch out of a team's bats. The culprit: jet lag. (AP Photo/Charlie Riedel, File)
Associated Press | January 23, 2017 1:07 pm
Caught napping: Baseball hitting, pitching sapped by jet lag