March 5, 1973 - Yankees teammates Fritz Peterson and Mike Kekich arrive at spring training and announce they have swapped their wives and families. Even the family dogs were traded. : r/baseball
Two American baseball players once officially traded wives and kids - Daily Star
The Wife Swapping Scandal That Made for One Complicated Family Tree! - Genealogy Gems
Neon Rocketship: The Strangest Trade In Baseball History
The weirdest MLB trade was when two pitchers got swapped by their wives - SBNation.com
Ex-Yankee Fritz Peterson has no regrets 40 years after wife swap
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Major League swingers: NY Yankees Fritz Peterson and Mike Kekich swap families, 1972 | Dangerous Minds
Two New York Yankees swapped wives 44 years ago. Still married?
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In His Book, Fritz Peterson Discusses Pranks, Teammates and Swapping Wives - The New York Times
Two American baseball players once officially traded wives and kids - Daily Star
This Day in Yankees History: The strangest trade in sports history - Pinstripe Alley