Price: $3.999 million
Location: Castle Rock, Colo.
Square footage: 10,668
Walt Weiss, the 1988 American League Rookie of the Year, played 13 seasons for the Oakland A's, Florida Marlins, Colorado Rockies, and Atlanta Braves before retiring in 2000.
With a batting cage inside the house and a full-size baseball diamond anchoring its 73 acres, its owner’s profession is immediately obvious to potential buyers who come for a tour.