only one of my favorite sports stories of all times:
Fritz Peterson is best remembered for swapping wives, kids, and dogs with teammate Mike Kekich in the off season before Spring Training in 1973. Peterson is still married to the former Mrs. Kekich but Peterson's wife never did marry Kekich. The two had been very close friends, and their families had done many things together. Both Peterson and Kekich felt that they had fallen in love with the other's wife, but whereas Peterson married Kekich's former wife, the relationship between Kekich and Peterson's former wife didn't last.
The event became a huge media story at the time, bigger by far than the introduction of the designated hitter or the purchase of the Yankees by George Steinbrenner's group.