Caught napping: Baseball hitting, pitching sapped by jet lag (Yahoo Sports)

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. Dr. Ravi Allada of Northwestern University said he and his colleagues wanted to study the effects of body clock disruptions on human performance. Results of the new study generally showed that traveling eastward was more disruptive than going west, a known feature of jet lag.